Tried the following methods=
Cold boot
Switching from PC USB to Asus charger
Switching from other manufacturer's charger to Asus
Freeze the charger(???)
Adaptor charge the tablet in good order, but it doesn't seem to be charging the doc.
The dock is always blinking rapid amber led when plugged in and the adaptor just get really hot.
Guys, any advise? Warranty expired, it gonna hurt my wallet to send in for repair ;(
Sent from my Nexus 7 using xda app-developers app
If you let the dock drain 100% it sometimes encounters problems. If you open up the dock you will see a little switch. Flip it back and forth and it should start charging again
mrevankyle said:
If you let the dock drain 100% it sometimes encounters problems. If you open up the dock you will see a little switch. Flip it back and forth and it should start charging again
Click to expand...
Click to collapse
where exactly is that small switch ??
RIght beside the battery on the charging port side if i remember correctly
mrevankyle said:
RIght beside the battery on the charging port side if i remember correctly
Click to expand...
Click to collapse
Got the same problem as the OP - Dock not charging and even the dock option is greyed out within the Settings - Interface - Launcher option.
My question is - Is there any software command that would simulate the flipping of the switch using ADB etc? Would not want to open the dock as yet..
It works properly when I attach it to the tablet, only problem is that it doesn't charge...Any pointers would be more than welcome!
Am on 4.1.2, CM10 2012 12 08 Unofficial
Thanks!
Try a cold boot, it fixes lots of these problems. Hold the power and vol down buttons till you see 2 icons on the screen, then release the 2 buttons and let it boot. Try it while docked and it should start charging again.
Lethe6 said:
Try a cold boot, it fixes lots of these problems. Hold the power and vol down buttons till you see 2 icons on the screen, then release the 2 buttons and let it boot. Try it while docked and it should start charging again.
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Click to collapse
Yes, already tried that (it says cold booting linux and all..) , I tried it while docked and with the charger in the dock..but still the same orange blinking light..Dual Battery Widget also doesnt detect the dock..though I can type with the keyboard and all that stuff..
Guess you should open it up then, and try to switch trick as I doubt there's an ADB command for a hardware switch inside a "third party device" since it's not part of android but really an extension that probably requires drivers and/or kernel modules outside of stock android. If there is, it's probable it's not documented if it was added by Asus for Asus. While it's opened up inspect the battery for obvious signs of wear/damage. Dual battery widget didn't work for me on some ROMs (can't remember which exactly but only the tablet battery was detected) but recent CM10 should have a separate icon with a dock through the battery icon while docked.
You can try the dumpsys utility from ADB, which prints out battery info so you may find something, but you can't manipulate data at all:
adb shell dumpsys battery
Also, did you try wiping the battery stats in recovery? If you have that option...
And lastly, lots of people are suggesting the freezer trick. To me that would be last resort but it looks like it's working for some people it seems.
Lethe6 said:
....it's probable it's not documented if it was added by Asus for Asus...
...You can try the dumpsys utility from ADB...
Also, did you try wiping the battery stats in recovery? If you have that option...
And lastly, lots of people are suggesting the freezer trick. To me that would be last resort but it looks like it's working for some people it seems.
Click to expand...
Click to collapse
Thanks for your detailed analysis and useful suggestions - just reflashed the CM10 8th Dec UNofficial rom y'day only and then recovered all the apps etc..But your idea of wiping out the battery stats didn't cross my mind! Should be there under advance I guess within recovery..(Have touch based 5.9 or something)
I would let the charger plugged into the dock and then try again the cold boot trick to see if that resolves the issue..Else would see if I have the option of wiping battery stats within recovery..
I am currently on vacation and hence donot want to open up the Dock here, freezer trick while harmless but I fail to understand logically how that would help Nevertheless would try it out if the above doesnt work..
Would report on the updates tomorrow (after 12 hours or so.)
The freezer trick is an oldie but a goldie. I used to do it with old hard disks that had certain problems and it worked in some cases, but usually you had an hour or so to salvage the data then it would die for good...
The logic behind it is that cold contracts the parts while heat expands them. So if it's a bad solder or something alike, the cold can temporarily fix it. But as I said, it would be a last resort for me and I'd triple seal it in ziplock bags to make sure no humidity can get in or out.
Let us know how it works out!
Lethe6 said:
The freezer trick...
..Let us know how it works out!
Click to expand...
Click to collapse
I am actually inclined to open up the keyboard and flip the damn switch now!
Also I did try cold booting (as the tablet had charged to 98%) and also wiping out the battery stats, but no change in situation still.
Opened the keyboard, flipped the switch but still no change..Orange light just keeps on blinking approximately every second..
Am at a loss to understand what could be the problem - the dock and tablet were bought in Sep last year and the dock has hardly been used (probably not for more than 20-30 hours in the last 14 months or so..)
Anyway I havenot closed the keyboard completely, would flip the switch again after sometime and see if that changes the charging behaviour in any way!
Anyone who has had success with dock charging issue after flipping the switch?
Update on previous post - Suspecting that it could be a software issue as well, I flashed an old Megatron Rom (based on CM9), and tested the switch again.
Switch off - Only EeePad's battery is shown
Switch On but no charger - Dock's battery is shown (symbol of battery + Keyboard) BUT with a red exclamatory sign, along with the normal EeePad's battery
Switch On and with Charger - Dock's battery is shown (symbol of battery + Keyboard) with charging sign , along with the normal EeePad's battery
So definitely an improvement as compared to CM10!!
Wondering if I should search for a Stock (Rooted ?) Firmware and flash that..Or probably just a firmware for the dock (does that exist?)
I'm pretty sure there is firmware for the dock (I think you see it in the settings while docked) but I don't think it's available, nor does any rom actually change it they just "use" it. For sure the best thing to try would be stock now with dual battery to make sure it works properly. Easy flasher will get you back to stock, provides root and can install different recoveries for you (there's plenty of others but this one seems easiest and worked best for me).
I'm thinking you're right on both accounts: the switch did work and there's a software issue somehow causing this. I've seen stranger things with custom roms. Glad you're making progress!
Lethe6 said:
.. the best thing to try would be stock now ..Easy flasher .. seems easiest and worked best for me..
Glad you're making progress!
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Click to collapse
Thanks a bunch Lethe6 !! I have downloaded the Easy Flasher (V 0.8.3 Stable) and am downloading the Stock Rom from ASUS WebSite (300MB)..Its a slow connection here, so I would be able to report back by tomorrow only..But I am optimistic that Stock Rom should resolve the issue with the charging!!
Thanks once again for providing the links, I would report back tomorrow on the progress!
UPDATE on prev post - Flashed the latest stock from ASUS Website ..It does show the Dock Battery BUT at 0%
And from what I read here, I seem to have run out of lack as apparently there is a design flaw wherein there is no way a dead battery can be revived!!
(I ran out of warranty in September but as I wasn't using the dock really at that time, I didn't bother to look into the issue at that time..)
That really sucks But it must be a particular model because mine has went to 0% numerous times and I've never had that issue before. Did you try the freezer trick? At this point if it's supposedly completely dead, might as well give it a shot. Also some people suggest plugging it into USB for 5-12 hours, the trickle charge may help getting it going again. If the tablet is not 100% charged the dock won't start to charge either, so try just with the dock then try with both. Also check this out, sometimes strange fixes are the best.
You can probably find a refurbished dock for under 100$ during the holidays online, if you really need it.
Out of curiosity which series dock do you have? Mine is a B70 purchased in UK last September..(Tablet is also having a S/N starting with B70 and SBK v2)..
I tried the other fix as well that you mentioned - that is using a different USB charger, to my surprise without the tablet attached, there was no light on the dock. but if I attached the tablet, then orange light was blinking much quicker! So seems like the dock is quite sensitive wrt the current supplied through the USB cable..(Guess all USB chargers have typically 5V output or something?)
On using the original ASUS USB Charger, light blinks slower (with or without the tablet attached)..Have left the charger plugged in again ..in the faint hope that some trickle charge is able to revive the dock's battery!
And no, haven't tried the freezer trick as yet
Would probably contact ASUS UK once I am back in UK..
My "mobile dock" version (you can see it in settings -> about tablet -> mobiledock) is EP101-0213 and my tablet is SBKv2 C30 purchased in Canada 6 months ago.
There's a nice article explaining voltages and amps in relation with phones (which applies to almost any mobile device), however from what I read, the Asus wall charger has a different pinout for USB and feeds the power differently. I'm sure you can find the exact specs here somewhere, I saw people showing how to make your own charger.
But assuming you're right and it's sensitive to the current (Bad design? Cheap parts?) then it's possible that simply replacing the wall charger would solve it. I bought a spare one to leave at work for 8$ on ebay and it works nicely so far!
Just out of curiosity.. did you/can you try to connect it to another power source? Like a different house? I once had a problem with a charger that there was too much noise on the electrical system and the charger couldn't keep a decent current output because of the variations, so the phone would say it was charging but it wasn't; tested later at several locations and it was working. I know it's a long shot but hey at this point...
Thanks! Would have a look at the link you provided..Meanwhile I also came across this link which kind of indicates that using a 12V 1A charger fixes the dead battery! Would probably order the relevant stuff from ebay and see how it pans out! Just crossing my fingers at this point really and have also left the charger plugged in to see if it does trickle some charger into the dock!
After flashing the latest stock rom (instead of CM9 or CM10), I also have same version for my dock ending in 213..
Finally apparently it seems that USB Debugging off/on also seems to affect the dock's battery as per the various other charging related threads on XDA..
Thanks for all your suggestions - you keep me motivated to try out various things and I am learning new things as well !
PS : Forgot to mention that I had already tried a different power outlet (i.e. in UK) and now another one in a totally diff country!
Related
Hi Guys,
I am hoping somebody can help me out here. I came home from work this evening to find that my Transformer was not powering up? At first I thought the batteries (both in the tablet, and the dock) had died, so I plugged it into the mains....nothing
Not even the little light on the side to show it is charging. I have checked different power sockets, and tried to see if my PC would recognize it...again, nothing.
I have tried charging through the dock and direct into the tab...nothing.
I was running the Prime ROM so if I sent it back to Asus I am sure they would reject any warranty claim. Can anybody think what the problem could be or give any advice?
Thanks in advance
Ben
Press power button for like 25 seconds to see if the tablet will restart.
Check if you can go on APX mod and try nvflash.
If this doesnt work i think you can easily RMA your unit without worrying about warranty.
FabioRochapt said:
Press power button for like 25 seconds to see if the tablet will restart.
Check if you can go on APX mod and try nvflash.
If this doesnt work i think you can easily RMA your unit without worrying about warranty.
Click to expand...
Click to collapse
Hi, have tried all this but nothing at all. I will try and send it back (any ideas how I go about doing that?) and hope they don't realize I had a non standard system on there.
Unless anybody else has any ideas?
Still have no idea how it happened though, both the tablet AND the keyboard? Both were working fine less that 24 hours ago!
actually sounds like you may have broken your charger (the cable) as you said BOTH devices wouldn't charge. I would look for another charger (find someone who will loan you theirs) or buy another online, just to check and see if I am right. Dunno what else to say, if it isn't the charger and your tablet won't turn on or charge, then there should be absolutly no worry about RMAing it.
I second trying a new charger. I bought one TF and the charger was DOA, after some research, apparently this is the weak point of the Asus...they make really junk chargers. You PC won't charge the TF either, at least not in the standard sense, the TF requires +12 volts to charge, if you plug into a PC over night (5volts or.whatever) you may only get a couple of percent.
If both dock and tab aren't charging, and Asus is known for crap chargers, then logic would dictate that you have a bad charger... That or you have a bad dock and tablet... A less likely scenario. Radio shack sells a 12v charger with a USB end that will charge your TF perfectly... I have one as a backup, cost 25 bucks. Good luck.
Sent from my SGH-I997 using XDA App
I agree with both you guys! I think its the charger also; my reasoning behind this is I left the cable plugged into my PC and every now and then it attempts to boot, it even got to the lock screen once and then turned off.
As you say USB charging does work...just very...very...slowly!
I assume it was just a bad coincidence that both dock and tablet got drained at the same time as my charger dying! I will try and get my hands on another charger to see what happens
Cheer
I got the same problem. Since I have two TFs in the house, the charger was quickly ruled out. I had Prime loaded at the time.
I tried to get the TF into APX mode to nvflash (blindly as there was no display) back to stock. I could hear the unit went to APX mode (thru the PC's speaker). Nvflash saw the unit but couldnot finish loading the bootloader.ini.
I suggest you to try the same and maybe got better luck.
Anyway, I returned (took the chance) the unit with Prime still on it. They didnot find out eventhought they didnot replace anything but putting back the stock ROM, saying NoTroubleFound (the story didnot ended here ---> another RMA).
Hi, Ok..So I left it plugged into overnight and through the day (about 18 hours) and it charged to 60%. This gave me a chance to test a couple of things; the first thing I did was to install another ROM, in this case, Revolver.
Once it had finished installing...it booted fine, and guess what...The charging worked!!! YEY for Revolver!
I can only assume by this that the Prime ROM I was using somehow managed to get corrupt and kill the battery AND not allow charging.
I am so so so glad that the Revolver ROM has sorted things. I may go back to Prime though as I have never had problems before and like the ROM.
Cheers guys for all the help that was offered!
Ben
bendonahue said:
Hi, Ok..So I left it plugged into overnight and through the day (about 18 hours) and it charged to 60%. This gave me a chance to test a couple of things; the first thing I did was to install another ROM, in this case, Revolver.
Once it had finished installing...it booted fine, and guess what...The charging worked!!! YEY for Revolver!
I can only assume by this that the Prime ROM I was using somehow managed to get corrupt and kill the battery AND not allow charging.
I am so so so glad that the Revolver ROM has sorted things. I may go back to Prime though as I have never had problems before and like the ROM.
Cheers guys for all the help that was offered!
Ben
Click to expand...
Click to collapse
Ok...Spoke to soon! It isnt charging from the mains, so now I do suspect the charger. However the reason I initially thought the problem was fixed is that when I plug the tablet, into the dock, the battery charging light flashes on the dock?!?!?
Almost as if the tablet is charging the dock, but I didnt think this was possible?
Oh I dont know anymore, my little brain is getting all confused!
I'm pretty sure that light flashes regardless, when the tab is mounted to the dock, but don't quote me on that. Also, try the freezer trick, seems like to me that your charger isn't quite 100% dead. put it in a zip lock bag and toss it in the freezer for half an hour and then try it again.
Sent from my SGH-I997 using XDA App
theraffman said:
I'm pretty sure that light flashes regardless, when the tab is mounted to the dock, but don't quote me on that. Also, try the freezer trick, seems like to me that your charger isn't quite 100% dead. put it in a zip lock bag and toss it in the freezer for half an hour and then try it again.
Sent from my SGH-I997 using XDA App
Click to expand...
Click to collapse
Ermm.....Really...This one I have never heard before. What is freezing it supposed to do? And surely that would cause more harm then good?
Or is it April Fools *check calendar*...Nope!
bendonahue said:
Ermm.....Really...This one I have never heard before. What is freezing it supposed to do? And surely that would cause more harm then good?
Or is it April Fools *check calendar*...Nope!
Click to expand...
Click to collapse
Oh my lord! This actually worked! lol. I have to admit to being a bit skeptical but thanks for the advice, I appreciate it loads!
No problem man, it has to do with a built in temp switch in the charger. You'll still need a replacement but at least you are operating now. Like I said previously,I recommend the radio shack 12v charger with USB end, its the enercell 12v adapter cat# 273-358.
Sent from my SGH-I997 using XDA App
theraffman said:
No problem man, it has to do with a built in temp switch in the charger. You'll still need a replacement but at least you are operating now. Like I said previously,I recommend the radio shack 12v charger with USB end, its the enercell 12v adapter cat# 273-358.
Sent from my SGH-I997 using XDA App
Click to expand...
Click to collapse
Thanks, I found a replacment on Amazon.co.uk (I live in England) which appears to be right for the job. http://www.amazon.co.uk/Ex-Pro®-Var...ent-supply/dp/B005EWJGXG/ref=pd_sim_sbs_ce_16
Thanks again
I appear to have bricked my Transformer.
I had a very successful dual boot Android/Linux sytem up and running. I installed with OLife Prime. However, this evening I finished what I was doing in Ubuntu, without thinking closed the lid and went for dinner. When I returned and opened the lid, the screen stayed blank. No amount of pushing the power button, or down volume + power, or even up volume + power, or connecting to the charger (no light even came on on the device), or even connecting to a laptop via USB rectified the problem.
I have read about some of the sleep issues on the Wiki, however everything there seems to indicated that the screen should flash on and off after closing the lid. In my case, it seems to be in a very, very deep sleep. I also read something on page 119 of this thread about deep sleep issues, but not really a solution around how to fix it. The Wiki said something about a hard reboot, but I think I´ve already tried that.
I had made a couple of changes to the stock Ubuntu install - I was running Lubuntu (Lxde window manager) to improve performance, and I also had Firefox writing cache to RAM rather than disk. Apart from that, a pretty standard install.
Any thoughts much appreciated because I am a bit stuck!
phillcX10 said:
I appear to have bricked my Transformer.
I had a very successful dual boot Android/Linux sytem up and running. I installed with OLife Prime. However, this evening I finished what I was doing in Ubuntu, without thinking closed the lid and went for dinner. When I returned and opened the lid, the screen stayed blank. No amount of pushing the power button, or down volume + power, or even up volume + power, or connecting to the charger (no light even came on on the device), or even connecting to a laptop via USB rectified the problem.
I have read about some of the sleep issues on the Wiki, however everything there seems to indicated that the screen should flash on and off after closing the lid. In my case, it seems to be in a very, very deep sleep. I also read something on page 119 of this thread about deep sleep issues, but not really a solution around how to fix it. The Wiki said something about a hard reboot, but I think I´ve already tried that.
I had made a couple of changes to the stock Ubuntu install - I was running Lubuntu (Lxde window manager) to improve performance, and I also had Firefox writing cache to RAM rather than disk. Apart from that, a pretty standard install.
Any thoughts much appreciated because I am a bit stuck!
Click to expand...
Click to collapse
sounds like the battery is flat
lilstevie said:
sounds like the battery is flat
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Click to collapse
Battery was about 80% charged when I left the machine and I only left it for about two hours. Also, it seems to accept no charge now - small light on keyboard dock near charge port does not come on when connected to mains
EDIT:
OK, it was a flat battery and I feel pretty stupid for crying wolf, but I still don't understand why.
I had the Transformer on charge for most of the afternoon. I was using Android and had pretty much 100% charge. I then used Ubuntu for about 2 hours before closing the lid for another two hours. After this the battery was flat. Super, mega fast battery drain!
The second part of the problem was the not charging part. Once before I had a problem with the Transformer not charging. To fix this, I took apart the charging block (remember the bit that plugs into the wall came in two parts originally) and gently bent outwards the two pins inside. Put it back together, plug it in and the Transformer started charging.
All is good once again, but I still don't know the battery drained so fast.
phillcX10 said:
Battery was about 80% charged when I left the machine and I only left it for about two hours. Also, it seems to accept no charge now - small light on keyboard dock near charge port does not come on when connected to mains
Click to expand...
Click to collapse
Dead charger? If it doesn't charge the tablet alone, or the dock alone, then that'd be my suspicion...
phillcX10 said:
Battery was about 80% charged when I left the machine and I only left it for about two hours. Also, it seems to accept no charge now - small light on keyboard dock near charge port does not come on when connected to mains
EDIT:
OK, it was a flat battery and I feel pretty stupid for crying wolf, but I still don't understand why.
I then used Ubuntu for about 2 hours before closing the lid for another two hours. After this the battery was flat. Super, mega fast battery drain!
Click to expand...
Click to collapse
Beware closing the lid while using Ubuntu! The screen doesn't turn off. it looks like it's going to turn off at 3/4ths closed and then the display goes back on when the lid is completely down. I don't know for sure, but maybe that had something to do with it. the same thing applies for using Prime. if you lock the screen before you close the tablet, as soon as you close it, the screen comes back on.
Sent from my HTC Vision using xda premium
Hi everyone,
I was using the megatron 1.0.1 rom and I doubt it has anything to do with my problem, but did happen right after flashing this rom for the first time. I left the tablet docked in the keyboard dock in sleep mode for a few days only to come back to it completely drained. I don't think it was deep sleeping for some reason but I didn't look into it to much. I charged it back up through the keyboard dock, but now the battery widget is displaying 0% on the keyboard dock and will not charge it anymore. The light on the side always stays solid orange, never blinks and never goes green anymore. I have since changed to the latest ASUS official firmware in hopes to revive it with official firmware.
I tried a few suggestions with no luck. This is what I tried.
1. Reset battery stats and Cold reboot
2. Allow wake on keyboard, allow it to deep sleep and then wake it with keyboard press
3. Fully charge tablet with power adapter, turn off, change power adapter to keyboard dock and then reseat tablet and let it turn on automatically.
4. Leave it plugged in USB for a few hours.
5. Charge just the dock without the tablet seated.
I'm looking for any suggestions and hopefully someone who has solved the problem??
It is no longer under Warranty so RMA is not an option.
Thanks for any help.
Hi, i have the same problem. But i'm using Megatron 1.0.4 keyboard blinks orange all the time with the tablet docked and without it. I would also know if anyone have a solution for that. i didn'T tried to go to stok to see if it help.
The wake on Keypress is part of the ASUS official firmware and I saw a suggestion to try that to get the battery charging. Also I wanted to ensure I had the latest dock firmware incase ASUS put a fix in to revive the battery to start charging again. Does you battery widget also say 0%?
Blinking orange means below 5% I believe, and does the blinking orange stop when the tablet is not connected? If it blinks with the tablet disconnected from the keyboard dock, try contact cleaner of the dock connector, something might have shorted pins making it believe the tablet is connected.
Yes, my battery widget says 0%. Now i have tried the latest cornerstone nightley of teameos and my dock now stopped blinking and shows green. that means its full charged. but the widget shows 0%. now i try my nandroid backup of stock rom. in the teameos nightley i havent an option with wake on keypress
Thats good, sounds like you got your fixed. Our problems are a bit different with the status of the dock LED, but glad yours is fixed. I tried eos nightly 24 as well when I first tried to solve the problem, but it made no difference to addressing my problem.
And the wake on keyboard option is only in the ASUS based roms like the official or Revolution, Revolver, Frozn roms which are all based off the ASUS roms. Its in the ASUS option in settings.
Hoping someone will see this thread that might have a good suggestion.
Yes, i hope someone can help you out. my dock behaviour is now how it should be. green when fully charged, but the dual battery widget shows 0% for the dock. no wi try to restore my nandroid of stock rom and the first try failed with an error while restore the "/data"...i try it again after wipe everything. hope the widget will work on stock. But i will try again the megatron rom. Its the best i tried for now. TeamEos have some potential but Megatron is very fast and stable for me...with the only one problem with the dock battery
EDIT: Now it seems like i have fixed all. I have restored my nandroid of stock rom and then it worked with the widget correct. Now i install again the Megatron 1.0.4 Rom and voila it shows the battery icon and the dual battery widget how it should be. hope you will have succsess on your problem
thestudent00 said:
EDIT: Now it seems like i have fixed all. I have restored my nandroid of stock rom and then it worked with the widget correct. Now i install again the Megatron 1.0.4 Rom and voila it shows the battery icon and the dual battery widget how it should be. hope you will have succsess on your problem
Click to expand...
Click to collapse
Thats great, glad you've got it working right. So your solution was simply just flashing another rom and then back to stock and you were fixed?
I'm noticing another problem now, and not sure if it is at all to do with this. I was at 40% battery in my tablet last night. I turned it off, and I left it in the keyboard dock. When I woke up this morning and tried to turn in on, it wouldn't turn on. Plug it back in the outlet and let it turn on and it is 0% So somehow its still draining really quickly while being off. I need to test without the keyboard dock attached to see if it is some how sucking the battery out of the tablet. It now does the reverse of what its suppose to do, instead of giving power, it takes power from the tablet.
Weird issues, I might call ASUS and find out what it costs to repair this vs just buying another. Not having much luck on the forums with anyone else having this exact issue.
The quick battery drain is called a "Sleep of Death, or SOD" it's an ICS issue, nothing we can do untill ASUS fixes the firmware, as for the dock, try discharging the tablet completely then charging the dock and seeing if it will then charge the tablet. If so it's probably an indicator light/widget issue, flashing back to stock then back to ROM should fix it. Also check your connectors for debris/etc.. as suggested above.
Well good news for me, I called ASUS last night about the problem and the opened an RMA and told me to send it in. I wasn't going to mention the warranty already expired, and they didn't say anything when I gave them my serial number, so it was defiantly worth the effort. I will report back once I receive the dock, but to anyone that has a similar issue that can't be solved like mine, its worth the call to ASUS to see if they will still cover it. I think mine is more hardware problem then a software glitch.
Well just to end this thread and marked it as solved, I just wanted to comment that the only fix for mine was RMA. It seemed like a hardware problem, but perhaps just a coincidence that I also installed Megatron Rom just before. Anyways, if you find yourself in my situation, try ASUS RMA dept. I was out of warranty, they either didn't know or didn't care and RMA'd it for me. Thanks ASUS for the new keyboard dock, works perfectly again!
I've been enjoying my TF300 since the month it was released, but in the past few months the battery stats have become less and less accurate. I was watching YouTube videos on it while it was docked and charging yesterday when it suddenly died, and I haven't been able to get it to boot since. Sometimes it will start to boot, but die half way through the boot animation, which implies that the battery isn't charging.
When I plug the charger directly into the tablet, it flashes orange twice and then does nothing. When I plug the charger into the dock, that shows green - so I assume the dock is fully charged. When I plug the tablet into the dock, it flashes red twice again.
The logical assumption from this is that my TF300 has stopped accepting or holding a charge. My question is, which part do you think I should try and replace first? I understand that the dock connector has separate pins for 5V and 15V charging, so maybe that's been bent or broken somehow...or the battery itself could be worn out...or the motherboard could have developed a fault. Has anyone had a similar experience to this? I don't want to buy a new tablet as there is absolutely nothing wrong with my beloved Transformer other than this!
I'm going to leave it plugged directly into a standard PC USB port for several hours tomorrow while i'm at work, to see if it will trickle charge that way. That would imply the charger is at fault, despite the green light from the dock when it's plugged in.
sort of same here
My thoughts are that the one battery is no longer seen by the tablet and the other is getting too much of a workout as a result.
We have possibly just lasted beyond it's expected lifetime - which is kind of dissappointing. I don't understand exactly, but we might troubleshoot this still.What rom or Firmware are you using? I am on straight CM11 with no other modifications. I am using the tablet docked al th time and th rom "sees" the two batteries but dies at about 50% of the one without touching the other. I'm pretty sure that it really only is using the dock battery and never seems to go to the tablet battery anymore. Wish I could fix it - will try to use it without the dock and see what happens.
It was running KatKiss 5.0.0 - I kept reminding myself to go and download the latest update but never got around to it.
After leaving it plugged into a standard 800mA charger all night and all day, it booted for about 20 seconds and then died again before it reached the lockscreen. It seems that the battery is either charging unusably slowly or not at all. I may have to start hunting for a new convertible!
jonty-comp said:
It was running KatKiss 5.0.0 - I kept reminding myself to go and download the latest update but never got around to it.
After leaving it plugged into a standard 800mA charger all night and all day, it booted for about 20 seconds and then died again before it reached the lockscreen. It seems that the battery is either charging unusably slowly or not at all. I may have to start hunting for a new convertible!
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Well mine is working fine disconnected from the dock - so it sees the Tablet battery and uses it now; I will use it until it needs charging and then try again - by attaching the dock and charging etc. Will yours work if just plugged in? - like a laptop with an old battery, does it still work but you are tied now to the power supply / charging cable? I have installed the latest "homebrew" Omni now to just get a new start on things and will continue to just use up the battery and see what happens next. My preference is to have vanilla CM but it seems the tablet battery was invisible. I hope by re-setting things and having a new Rom in place will give me a clean slate.
Sadly no, it doesn't run even when permanently tethered to the power supply. I think the battery has to report a minimum state of charge before it's allowed to turn on, and that's where it's failing in my case.
Batteries are back
I wish that I could tell you how - but I can't - the batteries are back to full functionality. I will tell what I have done and this might possibly help. I installed Omnirom with Lollipop and it worked but was very slow. Then I installed CM 11 back (then CM 12, then CM 11 again all with the appropriate GApps & SuperSU etc.) and it seemed to put things back in order. I did also install a battery calibration app which just deleted a file tracking the battery(s). Some where in there the batteries starting working properly - this involved more than a few re-boots and re-installs (dirty and clean). In all this mess lies a possible solution or maybe it was when I slammed it shut in frustration - this could all be due to a loose wire/solder joint too. The battery is following the "normal" process now of first draining the tablet battery to ~ 80-90%, switching out to the dock battery, then switching back to the tablet when the dock is drained fully.
@kjwaugh
I can't recharge my battery and I have CM-11-20150112.
My little led never turn on orange light.
My question for you is: Does your led turn on when you plug in the USB cable ?
I'm afraid I have broken some analog circuit inside the tablet or, I hope, only the cable.
Please let me know.
I have the new Shield K1, and it worked great for a few weeks.
Lately, my shield isn't charging as fast as it used too, and when it's plugged it, it doesn't show the charging icon in the status bar. I've tried dozens of cables and adaptors, none of them had any effect. The tablet still charges, but very slowly. OTG accessories still work fine.
When I first got my shield, it charged super fast (using my nexus 7 2012 charger), but now none of my 5v2a chargers work.
A point of interest, I have a portable battery pack that also used to charge my tablet fine. It used to fully discharge in about 4-5 hours with my tablet, now it takes about 14-15 hours, does that mean my tablet is not drawing as much power as it needs?
Shield Tablet K1 / 5.1.1 - rooted / TWRP - multirom
Figured it out. I flashed multirom for the original shield tablet, and it overwrote the firmware for USB support. To fix it, I flashed a full stock OTA image for the original shield to the K1, then I flashed the system image of the K1 lollipop. Multirom and USB work fine now.
28362836 said:
Figured it out. I flashed multirom for the original shield tablet, and it overwrote the firmware for USB support. To fix it, I flashed a full stock OTA image for the original shield to the K1, then I flashed the system image of the K1 lollipop. Multirom and USB work fine now.
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Nice! Always like to see questions be answered by OP. Im looking forward to rooting mine.
Any idea how to get rid of this issue on stock ROM?
28362836 said:
I have the new Shield K1, and it worked great for a few weeks.
Lately, my shield isn't charging as fast as it used too, and when it's plugged it, it doesn't show the charging icon in the status bar. I've tried dozens of cables and adaptors, none of them had any effect. The tablet still charges, but very slowly. OTG accessories still work fine.
When I first got my shield, it charged super fast (using my nexus 7 2012 charger), but now none of my 5v2a chargers work.
A point of interest, I have a portable battery pack that also used to charge my tablet fine. It used to fully discharge in about 4-5 hours with my tablet, now it takes about 14-15 hours, does that mean my tablet is not drawing as much power as it needs?
Shield Tablet K1 / 5.1.1 - rooted / TWRP - multirom
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ntn_labs said:
Any idea how to get rid of this issue on stock ROM?
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If you are having slow charging issues on your Shield K1, here are a few steps that might help you. (please note: the average complete charging time for the Shield K1 is between 2-2.5 hours under continuous operation.)
-First off, your power supply. Your Shield Tablet requires a minimum 2A 5V power supply to charge at any reasonable rate, and I suggest using a 2.5A power supply along with a high quality cable to ensure quicker charging.
-Secondly, are you using the tablet while it is charging? Keeping the screen on, playing games, watching videos, or even apps running in the background while charging can cause it to slow to a halt easily. Try turning the tablet completely off and charging it then to see if it charges significantly faster, if so, that might be the problem.
-Thirdly, the tablet's USB port. Check to see if there is any debris in the Micro USB port on the tablet. Make sure the port isn't broken by gently wiggling the USB cable to see if it's loose, or if it disconnects in certain positions. Check that the cable is plugged in all the way, it should "Click" when inserted.
-Finally, you said the tablet is running a stock ROM, but do you have any custom recovery/bootloader installed? If so, try flashing the stock bootloader and recovery, and see if that helps.
If none of this helps you, and you still have a warranty in place for your tablet, I would suggest sending it in for repair or replacement.
Well, first of all I guess I'm gonna say that I'm not a newbie. If that thing to the left is of any indication, I should be able to diagnose most of those steps myself. And I did
The thing is, my tablet was charging from zero to full more than three days and it still wasn't on 100%. And that damn thing was turned off. The charger is the same I used last week when it was (like You wrote) about three hours. The cable is the same. Everything is the same.
The only thing that happened was that my kid was running a YouTube marathon and discharged the battery completely so it shut off. After that, slow charge as hell.
And when I said it is stock, it means it's stock. No loaders no nothing.
I was hoping You know like... Clear the cache or battery stats could help. I'm not in the mood to go thru the warranty hell. Not yet...
28362836 said:
If you are having slow charging issues on your Shield K1, here are a few steps that might help you. (please note: the average complete charging time for the Shield K1 is between 2-2.5 hours under continuous operation.)
-First off, your power supply. Your Shield Tablet requires a minimum 2A 5V power supply to charge at any reasonable rate, and I suggest using a 2.5A power supply along with a high quality cable to ensure quicker charging.
-Secondly, are you using the tablet while it is charging? Keeping the screen on, playing games, watching videos, or even apps running in the background while charging can cause it to slow to a halt easily. Try turning the tablet completely off and charging it then to see if it charges significantly faster, if so, that might be the problem.
-Thirdly, the tablet's USB port. Check to see if there is any debris in the Micro USB port on the tablet. Make sure the port isn't broken by gently wiggling the USB cable to see if it's loose, or if it disconnects in certain positions. Check that the cable is plugged in all the way, it should "Click" when inserted.
-Finally, you said the tablet is running a stock ROM, but do you have any custom recovery/bootloader installed? If so, try flashing the stock bootloader and recovery, and see if that helps.
If none of this helps you, and you still have a warranty in place for your tablet, I would suggest sending it in for repair or replacement.
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ntn_labs said:
Well, first of all I guess I'm gonna say that I'm not a newbie. If that thing to the left is of any indication, I should be able to diagnose most of those steps myself. And I did
The thing is, my tablet was charging from zero to full more than three days and it still wasn't on 100%. And that damn thing was turned off. The charger is the same I used last week when it was (like You wrote) about three hours. The cable is the same. Everything is the same.
The only thing that happened was that my kid was running a YouTube marathon and discharged the battery completely so it shut off. After that, slow charge as hell.
And when I said it is stock, it means it's stock. No loaders no nothing.
I was hoping You know like... Clear the cache or battery stats could help. I'm not in the mood to go thru the warranty hell. Not yet...
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Click to collapse
I'm sorry if I made you feel like a newb, I wasn't trying to, but I work with what I am given. Based upon these new factors, it is quite possible that your tablet's lithium-ion battery is suffering from over discharge or overheating. When a lithium battery is drained below a certain voltage, irreversible damage is done that typically significantly reduces the amount of energy it can store, as well as it's ability to charge. If a lithium battery is heated to over 90c the same or similar is true. Of course, the shield tablet has protections against these things, but nothing is 100%.
It may also be possible that the charging circuit in the tablet has somehow became damaged, either through an electrical surge or a 1 in a million drop scenario. If none of that is true, it's also possible that you received a defective battery to start with, and the symptoms are only showing just now. The battery could have been damaged by radiation (nuclear or magnetic). the tablet could have gotten wet. Maybe a defunct soldering job from the factory. Defective Internal Controller Circuits. Bit rot affecting the Charging firmware. Freezing temperatures affecting battery chemistry. High intensity magnetic fields messing with battery polarity.
See where I'm going with this? There are literally thousands of things that can go wrong, and it can be one of them, some of them, or none of them. Either way, I would recommend replacing the battery yourself or sending the tablet in for the warranty.
I was hoping that since Your problem was "fixed" with software that maybe I could use Your solution and maybe my problem is not HW related...
So far it looks that even on a charger (and "charging"), the device is still discharging....
Anyway, thanx for the help.