Hey mates,
right now im building myself a multimedia computer in my car. I wanna have a large screen, touch, gps, 4g and good sound. So i took myself an Appradio 3 and a Motorola HD (fastes phone in my mind with hdmi). I also tried an Android TV Box (MXQ Pro+ 4k), but those really lack in performance. The Radio sends the touch via bluetooth to the phone. The phone itself sends video and audio signal via hdmi.
The Razr HD works fine, but i got 2 concerns.
1. The Battery. Right now the back of the Razr HD came off, cause of the heat the phone produces when charging, running at full capacity and lying in my glove compartment. So i disassembled the hd and removed the back cover. I was thinking of completely removing the battery, but of course it wont start up when no battery is connected. Is there a way of normally booting the razr without a battery? I was thinking of putting 3,7V to the contacts... But the battery got 4 connectors, what are the green circled ones? (heat sensor? charging input?) I red that the factory cable one can build is only for flashing and not for booting...
2. The original screen. Is there a way to fully rely on the hdmi output? I think it would give me a performance boost, if there would be only one screen to be rendered. Also it would save me a lot of battery and doesnt produce so much heat. (i know i can put it blank with "Screen Standby #root", but the performance is way more important than the heat/battery drain)
Do you have any progress in this?
CrossCroissant said:
1. The Battery. Right now the back of the Razr HD came off, cause of the heat the phone produces when charging, running at full capacity and lying in my glove compartment. So i disassembled the hd and removed the back cover. I was thinking of completely removing the battery, but of course it wont start up when no battery is connected. Is there a way of normally booting the razr without a battery? I was thinking of putting 3,7V to the contacts... But the battery got 4 connectors, what are the green circled ones? (heat sensor? charging input?) I red that the factory cable one can build is only for flashing and not for booting...
2. The original screen. Is there a way to fully rely on the hdmi output? I think it would give me a performance boost, if there would be only one screen to be rendered. Also it would save me a lot of battery and doesnt produce so much heat. (i know i can put it blank with "Screen Standby #root", but the performance is way more important than the heat/battery drain)
Click to expand...
Click to collapse
1. The factory cable can boot up the phone all the way, but I've only ever managed to boot it into factory mode (or whatever it's called) without a battery connected.
And if you are going to wire up 3.7/3.8V directly to the phone, it might be better to separate the charging IC from the battery and wire it up to that instead.
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2. I don't think the phone can render just to HDMI to increase performance. It will always just mirror whatever's on the screen to HDMI, regardless if you have a RAZR HD creen connected or not.
Related
Ive had the Asus TF101 for over 2 years now. Excellent tablet. Dropped off bed and went boom. Have no touch functionality and color distortion. Oddly enough when the battery ran down to 14% I got touch screen functionality back but color distortion still persists. Anyone know what cables inside the tablet control the touch screen? Ive done the reset a few times. Tablet is also rooted but doubt that will help with screen color problem. Unseated and reseated the video cables a few times. At first I had the black screen of death until I reseated the video cables. Then I had the screen work but color distortion and no touch capabilities. Once I let the battery drain down until the waring came on and beeped, then the touch screen started working again. Any help is appreciated and here a few pics of the problem. After reading a ton on this subject I tried draining the battery by restart after restart. I have no idea why that did eventually give me touch screen functionality back. This tablet has been dropped more times than I can count and it certainly does not owe me anything after 2 years of perfect service. Cant insert images but the screen is pixilated like a 640 x 480 resolution in 8 bit color and is halloween green if that helps.
cant insert images or links but the color is a greenish Halloween color and very pix elated like a 640 x 480 8 bit screen.
If you take a screenshot (VOL DOWN and POWER for 3 seconds, key above the 6 on the keyboard dock or hold recent apps key if you enabled it) and email the screenshot, does the screenshot look the same or normal?
If it looks the same, it is a sofware/driver issue. If not, it is a hardware issue.
My guess is that the video cable is loose and some pins don't have contact.
The video cable surrounds the battery and if dropped, the battery may dislodge the video cable (wide grey one on top of the big black battery):
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It looks similar indeed. Oddly enough once I pulled it off the charger I lost touch screen functionality. Running clock work mod to reset. Do you know what cables control the touch screen?
narrow gh
factory reset and know Im back to square one. No touch screen functionality and stuck on welcome screen. Any ideas??
I am not sure which cable is the touch screen.
I would try disconnecting the battery cable, wait a minute or two and then reconnect.
Thanks for all your help guys.
I wound up chopping it up and selling off the parts on eBay. Thanks again for all the responses.
Hi everyone,
Ok so I have browsed many threads on bricked xoom 2 / xyboards and most have been fixed via fastboot files. My problem is when i was clearing cache from a JB update.zip I had applied I accidently whiped System... When i went to reboot it said no OS installed warning, so i freaked out and plugged it in over night so it would not do anything from that point until i could get the fastboot files today. When i had woke up the battery was completely dead I have tried to plug it in and charge but it will only charge enough to turn on an sit at the M logo screen, i can get into fastboot mode but it keeps saying battery level low charge first, but as soon as the tablet charges it stops once it turns on (the white light goes out) I have read in other threads
Well there is the problem, depending on how "bricked" it is the following apply.
Really bricked. Stuck at M Your going to need to pull the battery and charge it out side of the tablet.
Kind of bricked. Os boots but loops at animation. Turn off tablet and plug in charger.
The OS is needed to charge the tablet. All be it the whole is dose not need to load. So if it's looping while attempting to do the final boot sequence then it should still charge.
From a power off state only the minimal core stuff needs to run for the charging modules to load. That said from a power off state the entire OS does not typical load
Click to expand...
Click to collapse
I am willing to do what it takes to get the battery out if need be, but I cannot find a DIY on this? does anyone else have any suggestions? Im not completely new to rooting / flashing, but I have always done so on a phone an this is the first time i have ever cleared system.
Thanks
Dave
Mcgyver Battery Removal And Charge by DMD
*Fixed*
My Mcgyver Battery Removal tutorial
Here's my Mcgyver fix for no os an low battery that won't charge.
**I am not liable for any damages done to your device, there are possiblities of damaging your device***
If you can still boot into fast mode like this but won't stay on long enough it's because an os is required to charge your battery.
Step 1 - start removing the rear cover
With a small tipped screwdriver or razor blade gently work your way between the glass and the rear plastic. This process is time consuming be patient . After working the case off you will see this.
Once the case is off the next step is to disconnect the two battery cables
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Next step grab an old charge cable and cut off the micro USB end. Peel back the rubber an you will find 4 wires. Black and red are the important ones, cut off others and strip red an black wires (if u have no wire stripers simply use a lighter to light the wire on fire an with a napkin pinch an pull , all off the rubber should b off now.
Now that your cable is ready remove the 2 screws holding down the wires to the battery (t5 torx bits) once these have been taken off wrap the red wire to the red loop ( tape these ends for safety ) do the same with black. Once you have them set up plug it into you laptop and let charge for 1-2 hrs ( always check on the temperature of battery for safety)
Once charged start it up and verify your fast boot screen now shows good battery program ok then proceed to rsd fastboot flash .
everything should run smooth after this.
Sent from my DROID RAZR using xda app-developers app
My experience is using a factory cable to turn on phone n install firmware w/o removing battery.
So my TF101 appears to be completely dead. I had it rooted and rom'd running KatKiss 4.3,not sure of which number . I loved it too. Anyway, before it died, it rebooted and would not leave the "updating apps"screen so I did a factory install which fixed the problem but only temporarily. A few days later the same thing happened. This time I could not even reboot it. I left it charged overnight but could not get it to boot at all. I think I have tried everything. I tried booting with and without being on the keyboard dock, I have tried plugging into the computer, tried hdmi to a monitor to see if the screen went bad. I tried seeing if the computer recognized it in APX mode. NOTHING. The USB charges the keyboard dock but does nothing for the tablet. The computer does not see it period. It looks completely dead. It is out of warranty but I even called ASUS and all they would do is charge me $340 to send it in.
I would love to troubleshoot to see if it is a board or battery or whatever gone bad , but I cannot find anything on the Web. Can anyone help. Otherwise it's a lovely paperweight.
It's possible that the battery has come to the end of it's life and won't hold any charge, which would explain why APX mode won't work, the PC can't power on the TF via USB, only trickle charge it while it's powered off / screen is off, but if the battery is dead then that's not gonna happen either
Not sure if the charger needs the battery for it to power on the TF too or not
You could try disconnecting the battery and plugging in the charger
Here is a good teardown video to show exactly how to get that done
https://www.youtube.com/watch?v=k-6dKsGJ4VY
Im not 100% sure, but if the dock battery is fine, you could check and see if the connections are the same and swap them over
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Still DEAD
Detection,
Thanks for the awesome YouTube of breaking down the TF101. Unfortunately, I swapped batteries and still no good. Nothing happens. It looks like the old battery has power too, based on my multimeter. Is there anyone else with suggestions at this point or do I leave it as a nice paperweight?
THansk....
Apologies for resurrecting this thread. My TF101 (with dock) had also gone dead after running one of the KatKiss ROMs (maybe 4.2). Wouldn't charge, wouldn't turn on even to the bootloader or recovery. Charged it for days, nothing. I left it for dead and forgot about it for over 6 months. Uncovered it the other, dusted it off, charged it and it magically powered up. Everything was still on the tablet as it was before it went unresponsive.
My guess is that a microcontroller responsible for powering up the tablet got into a bad state. Even when powered off, these very low power microcontrollers remain on to handle the button press that powers on the device. It took the tablet being absolutely, fully discharged to clear it out of that bad state. Not just 0% as reported by the battery firmware, but a true complete emptying of the battery where its voltage drops below what the microcontroller needs to remain running.
Hopefully if you still have the TF101 after all this time, try charging it up all the way and see if it comes back to life.
I don't know if I'm the first one to say this, but I find wireless charging completely useless... I had an old '90s Motorola with a charging stand... I find that INFINITELY more useful than "Wireless charging".
First of all, the charger still has wires, so you're still stuck on a wall... Unless it has a battery attached to it, which is nice, though most scenarios where you use an on-the-go charger you are "on the go" and moving, so a normal external battery could do... (see third point)
Second. your phone is still during that time... You can't do anything to it... Why? Just so you don't need to put a wire in the port, to save some (1 second) time (?)
Third, it has ZERO stability. That's why I say that charger from 20 YEARS AGO was a lot better. You put your phone in and it charged. Same as Wireless charging, except that old Motorola didn't fall off and stop charging the second someone bumped into the table just a little bit. Or you are in a car...
I find wireless charging just good marketing taking charging a step back...
Also, the USB pins that keep the wire in my phone got crushed, so my phone right now can't be lifted while charging... PEOPLE ACTUALLY PAY FOR THIS???
PS: I found a "useful" use in cafes
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All you need to do is plug in the phone and "wirelessly" charge....
I can't see the appeal, either. I use my phone a lot whilst it's attached to the charging cable. You can't do that when you use a wireless charger.
My charging cable is 2 meters long. I can sit on the sofa and use my phone as an ereader or TV screen whilst it's charging. If I were to use a charging pad, I'd have to leave it on the table, which is not very convenient.
For me wireless charging is just a useless gimmick.
I find the potential of it interesting, rather than the current state that it's in.
It just seems a billion times more durable than the damn micro-usb port on EVERY Android device.
Maybe wireless charging is the solution, or maybe it's usb type-c.... we'll see i guess :]
Yeah I don't see the appeal either. Maybe it's good for coffee shops or restaurants where you don't use your phone anyways and it's lying on the table, so might as well get charged.
Hi guys,
Yesterday my OPO fell down on a busy street and ran over by truck, cars and bikes. The display is completely broken. I tried turning on after that but the phone is not vibrating.
I took my device to service center today, but he said he tried changing teh battery and boot but no luck. So display and logic board needs to be changed.
So I decided tear down and wanted to run few steps.
1. Tried booting with wall charger but without battery - not heating, not booting
2. Connected battery and no wall charger - no luck, board not heating.
3. Connected battery and wall charger - board heating but not booting.
In all the above cases the rotor on the bottom is not spinning.
Question
1. Why board heats in step 3?
2. I plan to buy the display and battery, how do I make sure the board is perfect. BTW the board looks perfect?
3. In all the above tests, the SIM card is inserted and waited for few minutes and tried dialing my number but it says Switched off all the time. Is that mean the device is completely dead?
Need constructive replies please.
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If your device has really been ran over by truck or car, I don't think anything in the device will survive. (Maybe the plastic cover is flexible enough to withstand such pressure, but the motherboard is definitely not so strong although on the outside its not wrecked) As for the motherboard heating then wall charger and battery in, I suggest that it's because something is short circuited in the motherboard.
Sent from my ASUS_Z00AD using Tapatalk
Only heating with battery hooked up sounds to me like you are on the right track. The chip packages don't have internal wires to break these days. Good luck and report back.
I received my battery yesterday, I tested it, no sign of notification light, vibration during turn on. I tried connected it to PC, but dont know which process to look at. Any help?
Update: The process is "windows driver foundation user mode driver framework host process" but it shows when connected by other android not mine [broken opo]