Confused usb cable :S - Eee Pad Transformer Q&A, Help & Troubleshooting

so another charging problem. Tablet connects just fine to the pc with the cable but does not give any charge when connected to the wall socket charger. I thought maybe the adapter was a goner but went to my friends and tried with his cable on my adapter worked just fine. than tried my cable on his adapter and it wouldnt charge :S.. confused how can a usb cable stop transmitting all power but still connect to the pc :S? maybe the head is messed up.any ideas?

check there isnt any dirt on the connections on the cable. The connections are tiny and it will only take a spec to stop it connecting properly. Other than that its possible one of the voltage lines is broken in the cable but the data lines are still intact. Only a theory of course and if you have a DVM it will soon let you know.

Same thing happened to me. I called tech support they suggested to wipe the device. After trying other options I did a wipe but when it rebooted it didn't wipe but the tf did start charging after that... Perhaps that will help you?
Sent from my HTC Sensation 4G using XDA App

Asus uses a USB connector on it's cable, but it is not wired to the true usb spec. When plugged into a pc, it acts like a usb 2.0 cable and provides 5v to the tf. It also uses two conductors for data transfer. The 5v will sloooowly charge the tf it is off. When plugged into the wall adapter, the tf provides a gnd signal on pin 7 of the usb connector, this tells the adapter to provide 15v on the normal 5v pin. USB 2.0 only uses 4 conductors /pins. USB 3.0 has additional conductors normally used for higher data rates. If you use any extension on the usb cable it must be a 3.0 cable or pin 7 will be unconnected and you will not get the gnd signal therefore wall charger will only deliver 5v and a very slow charge.

Hey bighunko thanks fir the idea but i nvflashed the new primeon it and it still wont work. I think maybe the power lines a goner. Never seen thishallen before to a usb. I tried everything. Even freezing the cable. It only works in connecting to the pc:s
Sent from my Transformer TF101 using Tapatalk

I'm happy to say my TF is still charging! Sorry you can't get it to charge...
Sent from my HTC Sensation 4G using XDA App

Related

Unable to Charge HTC TOUCH PRO Via a usb/car charger

Hello,
I have a VODAFONE BRANDED, HTC TOUCH PRO phone and it has started playing up suddenly.
It would charge when connected to a pc, car charger using a usb cable or using any mini usb charger. all of a sudden it has stopped charging with any other charger except its own htc wall plug charger.
I have tried a hard reset and still no joy.
the charge via usb is unchecked and it charges when connected to a PC.
However it doesnt charge with the following methods which used to work earlier
1. Motorola charger - mini usb
2. Using a usb cable and a wall output with usb
3. car charger with a usb output.
I have a htc audio out connecter. when i connect the connector, and then charge via usb it works in the car and from the wall.
is it something to do with the pins on the cables and on the device??
I used to get a menu asking the sort of connection that i needed (activesysnc, data etc) when connecting to the car charger earlier, it does not come anymore.
Its frustrating cos i travel a lot and find chrarging with usb cables the most convenint in the car, office or else where.
Could it be damaged pins on the device??
Any ideas/suggestions will be highly appreciated.
Many thanks
Sal
saleemarshad said:
Hello,
I have a VODAFONE BRANDED, HTC TOUCH PRO phone and it has started playing up suddenly.
It would charge when connected to a pc, car charger using a usb cable or using any mini usb charger. all of a sudden it has stopped charging with any other charger except its own htc wall plug charger.
I have tried a hard reset and still no joy.
the charge via usb is unchecked and it charges when connected to a PC.
However it doesnt charge with the following methods which used to work earlier
1. Motorola charger - mini usb
2. Using a usb cable and a wall output with usb
3. car charger with a usb output.
I have a htc audio out connecter. when i connect the connector, and then charge via usb it works in the car and from the wall.
is it something to do with the pins on the cables and on the device??
I used to get a menu asking the sort of connection that i needed (activesysnc, data etc) when connecting to the car charger earlier, it does not come anymore.
Its frustrating cos i travel a lot and find chrarging with usb cables the most convenint in the car, office or else where.
Could it be damaged pins on the device??
Any ideas/suggestions will be highly appreciated.
Many thanks
Sal
Click to expand...
Click to collapse
Its prolly pins because the mini USB is not a perfect fit for the HTC audio jack. I would use your HTC adaptor and run the USB through that.
Something might be blocking a less than 1000mah income charge..
On low battery (as in dead-battery) you definately need a wall-plug charger. Under normal conditions the USB car charger or laptop would be fine.
Since you hinted the use of the audio jack I most likely is a bad connection on the USB pins. Did you take a look at them using a magnifying glass?
saleemarshad said:
Hello,
I have a VODAFONE BRANDED, HTC TOUCH PRO phone and it has started playing up suddenly.
It would charge when connected to a pc, car charger using a usb cable or using any mini usb charger. all of a sudden it has stopped charging with any other charger except its own htc wall plug charger.
I have tried a hard reset and still no joy.
the charge via usb is unchecked and it charges when connected to a PC.
However it doesnt charge with the following methods which used to work earlier
1. Motorola charger - mini usb
2. Using a usb cable and a wall output with usb
3. car charger with a usb output.
I have a htc audio out connecter. when i connect the connector, and then charge via usb it works in the car and from the wall.
is it something to do with the pins on the cables and on the device??
I used to get a menu asking the sort of connection that i needed (activesysnc, data etc) when connecting to the car charger earlier, it does not come anymore.
Its frustrating cos i travel a lot and find chrarging with usb cables the most convenint in the car, office or else where.
Could it be damaged pins on the device??
Any ideas/suggestions will be highly appreciated.
Many thanks
Sal
Click to expand...
Click to collapse
Ur problem solved? I am facing kind of similar problem... Now my Touch HD can only charge using USB cable through computer.. it will not charge using any other external AC adapter.. very strange huh?
100 % fix
I managed to solder the black negative wire to the usb housing of a male usb mini and now it charges without any problem. The housing is used as a substitute for pin 5 that is negative because it has a metal shield as standard.
to make it easier for some noobs, just get a usb female to a usb mini cable and cut it off and solder the negtive black wire to the shield cable around all the wires. AS standard all usb cable have this shield metal that conects to the usb housing.
This is a FIX if you have managed to break the pin5 when inserting the stylus in the usb rather than the RESET button.
I had a weird charging issue with my AT&T Fuze as well...
The phone would charge fine (wall or PC USB) until I got some kind of notification on the phone (missed call, e-mail, etc). Then it would stop charging. Often when it was on the charger and on, the battery would run down until the phone shut off. Then it would start charging again. I would put my phone on the charger at night (and on) only to come down in the morning to find my phone turned off and charging because the battery had run down!
Shortly after this started happening I also started to get "storage memory low" messages. Coincidentally, since I freed up a bit of the storage memory (cleared IE and Opera history) I have not had the charging problem...
mini-usb problems with charging
This is the 2nd Fuze that has problems with the mini-usb connection and charging.
Slight forward pressure is needed to get a good connection. This happens with two different cables, two different car chargers, and three different HTC usb adapter dongles.
My phone is usually plugged into my computer or my car charger, unless I'm carrying it. I keep the screen lit when on external power as I use it extensively as a PDA. It's real obvious when I lose the power connection, as the screen blanks shortly thereafter.
Do i need to send my fuze back? since I havent read a solution. I dont think its software but i turned on charging through usb and now its the only way to charge. No chargers work? Grrrr. Batterys and chargers are good. This happened to my last fuze.
not to be a prick or anytihng, but have you checked the battery settings, there is a checkbox so it doesnt charge when plugged in - i've knocked this on a few times myself
the OP already noted that that option was not checked. Please read a little before that.
My car charger sometimes need me to move the wires around abit before it starts charging. It seems to be more like a pin issue.
Mini USB Charging Problems
I had the same problem.
I just solve it by using other mini usb cable.
Now it charges.
HTC Touch Pro Charging via USB Problem Solved
I can't believe it was that easy! You are correct; There is a check-box that will disable charging via USB if the unit is powered on. "Systems/Battery" I have been putting up with this for months, but never took the time to try and solve it. Sheesh!

[Q] Charging cable

I have just bought up my transformer ( Love it ) but it's at about 10% battery right now... I take the cable that came with it (the usb one) and plugged it into my computer but it is not charging ? Any idea what's wrong with it ? when i plug it into the charging unit it works fine though
i've heard it has to be turned off for the USB charging to work....
Like off as in screen off or off as in complete off ?
It will not charge in your computer. You have to charge it in the wall.
Sent from my Desire HD using XDA Premium App
One of the pamphlets that came with it said the screen has to be off in order to charge it using a computer's USB port, cause the screen uses too much power and a USB port doesn't output as much, its best just to charge with the ac adapter. Nothing is wrong with your unit, thats just how it works.
Dark lord me said:
I have just bought up my transformer ( Love it ) but it's at about 10% battery right now... I take the cable that came with it (the usb one) and plugged it into my computer but it is not charging ? Any idea what's wrong with it ? when i plug it into the charging unit it works fine though
Click to expand...
Click to collapse
Turn off the screen and it will charge. (you don't need to turn it off; you just need a black screen) It is very, very slow though.
My wall charger never charged my tablet so I am awaiting a replacement. The USB charge is MUCH slower than the wall charge. We are talking about maybe 4-5% an hour -- max with the USB cable alone.
Connecting this thing to a computer will NOT charge it. Even a normal 5V 1.2A-2A charger won't charge it fast enough. I used a 2A charger and it trickle-charged for over half a day and managed to clock in @ 50pc. I think the unit uses hardware info from the ASUS charger to detect the charger. Any other charger wont do.
Isn't the cable and charger USB 3 and charging is at non USB 2 values (voltage and current).
Good amount of mis-info in this thread...
The unit *will* charge from computer USB, assuming the USB port provides enough amperage (not voltage). I have not yet measured out the amps used, but it's on my list of things to do...
In order to charge from computer USB, the display on the Transformer needs to be off. The unit can be on, but it must be asleep.
The adapter that comes with the transformer provides 15VDC via extra pins which loosely resemble USB 3.0. These are *not* USB 3.0 data/power specs, however a USB 3.0 extension cord could be used to lengthen the existing adapter.
Any USB car adapter should work to charge this in sleep mode, similar to a computer USB port. In order to "fast charge" in a car, however, you'd basically need to use an AC inverter with an ASUS Transformer adapter.
ChristoA1 said:
Good amount of mis-info in this thread...
The unit *will* charge from computer USB, assuming the USB port provides enough amperage (not voltage). I have not yet measured out the amps used, but it's on my list of things to do...
In order to charge from computer USB, the display on the Transformer needs to be off. The unit can be on, but it must be asleep.
The adapter that comes with the transformer provides 15VDC via extra pins which loosely resemble USB 3.0. These are *not* USB 3.0 data/power specs, however a USB 3.0 extension cord could be used to lengthen the existing adapter.
Any USB car adapter should work to charge this in sleep mode, similar to a computer USB port. In order to "fast charge" in a car, however, you'd basically need to use an AC inverter with an ASUS Transformer adapter.
Click to expand...
Click to collapse
Tried a 2.1A 5V charger. Took about 8 hours to charge @ 50pc. The ASUS charger is rated at 1.2A.
is the only way to plug the device into your PC or laptop via USB on the dock?
you cant use the proprietary charger cable to do USB data transfer with the charging cable USB component?
ie....to do data transfers via USB (not the memory card), the only way is via the dock?
makaveli25 said:
is the only way to plug the device into your PC or laptop via USB on the dock?
you cant use the proprietary charger cable to do USB data transfer with the charging cable USB component?
ie....to do data transfers via USB (not the memory card), the only way is via the dock?
Click to expand...
Click to collapse
No, one end of the charging cable is regular USB and the other end (tablet-end) is proprietary. You can transfer files over by connecting to your computer's USB.
awesome, thanks.
do you think that if you get a male/female USB converter, you could plug in a USB memory stick device or a mini hard drive device and have it work fine in the charging cable just like you would if you were to plug in a mini hard drive into one of the usb ports on the dock?

[Q] Charging ASUS transformer using computer?

I wanted to know if it is possible to charge the ASUS transformer using a computer?
Is there any hack for it?
umasood said:
I wanted to know if it is possible to charge the ASUS transformer using a computer?
Is there any hack for it?
Click to expand...
Click to collapse
IIRC it will charge if the transformer is turned off but very slowly
Sent from my Transformer TF101 using Tapatalk
When I was driving the other day with it connected to the USB charger in the car (same as PC USB) and it got 4% in about an hour.
isnt this the biggest DOWN SIDE of TF.
Like this is such a basic feature these days that you should be able to charge your android device using PC usb/ charger etc.
I thought there would be some hacks for this. or is this a hardware specific lacking?
The USB plug on the Sync/Charge cable of the Transformer is a USB 3.0 plug. It uses the extra pins of the USB 3.0 for the electricity to charge.
umasood said:
isnt this the biggest DOWN SIDE of TF.
Like this is such a basic feature these days that you should be able to charge your android device using PC usb/ charger etc.
I thought there would be some hacks for this. or is this a hardware specific lacking?
Click to expand...
Click to collapse
I don't think this issue is specific to the Transformer. I seem to recall that the iPad comes with a high-current charger, and charges slowly if done via a computer. I think the issue is that the battery is much larger than any smartphone battery, and the USB port spec was created to power things like mice and USB memory sticks, and provides a low current. This way it also won't overload the host computer's power supply and cause stability issues on the computer.
nxt said:
The USB plug on the Sync/Charge cable of the Transformer is a USB 3.0 plug. It uses the extra pins of the USB 3.0 for the electricity to charge.
Click to expand...
Click to collapse
the extra wires in USB 3.0 cables are for higher speed transfers the voltage is still 5.0V the TF uses one of the wires to signal the power supply to provide 15V vs 5 V. The connector is not a true USB 3.0 If you want to charge mobile ,just connect the 12VDC from your vehicle to pins 1 and 4.
After reading this i put my transformer in the USB 3 socket and hey presto... trickle charge enabled! It doesnt say that its dojing it but mine went up from 95 - 96% in the 10 mins i had it pluged in (whilst on it)
mazimo said:
After reading this i put my transformer in the USB 3 socket and hey presto... trickle charge enabled! It doesnt say that its dojing it but mine went up from 95 - 96% in the 10 mins i had it pluged in (whilst on it)
Click to expand...
Click to collapse
Awesome, it would only take like 16h to charge it from empty to full then! ... compared to ~1.5-2h depending on use with the 15v charger.
But if you want to charge it from the PC, just hook it up to the 12v rail on the PSU (build a molex to usb adapter or similar)
Edit: what would be interesting though, is if you could charge and sync at the same time by connecting the data cables to a usb port, but keep the power cables hooked to the 12v rail. Or maybe the TF shuts down all sync stuff when its charging...
Just a quick update... After 6 hours if gone up to a whapping...... 76%
I guess it was just playing trick on me!!!! sorry to get peoples hopes up.
Go look at USB3.0 specs. You do not have the current and Voltage necessary to do anything more than a slow trickle charge. 3.0 os basically 2.0 with an extra pair of wires for faster data transfer not higher voltage. The connector on the TF charger is not wired to USB3.0 standards.
The AC adapter reconfigures itself when it recognizes the asus tablet and it gives 12v instead of 5volts. Just tried now and it's working.

[Q] Transformer not charging with extension

As the cable is too short, I attached an extension cable.
However, now it does not charge. If i connect the short cable that came with the Transformer, it charges fine. Any suggestion?
The TF101 "short cable" as you call it, is a USB3 cable, what has +5 pins inside. One of these pins control the 15V charging (the tablet takes 15V from the charger instead of the usual 5V USB), if it can not send the signal through, it won't charge. You need a USB3 extension cable what's pretty expensive though.
Get this one or a similar one. As you can see, 2 reviewers vouch that this cable works.
http://www.amazon.com/StarTech-6-Fe...1?s=electronics&ie=UTF8&qid=1316952334&sr=1-1
ondoy1943 said:
Get this one or a similar one. As you can see, 2 reviewers vouch that this cable works.
http://www.amazon.com/StarTech-6-Fe...1?s=electronics&ie=UTF8&qid=1316952334&sr=1-1
Click to expand...
Click to collapse
I can vouch for it, too.
Got on of this USB 3 cable while at HK and work without any problem.
Thank you guys. Will be purchasing one. I am guessing Belkin F7C008QAF Conserve Valet USB Charging Station - Energy Saving wont be working with this :/
That is correct, because the transformer looks for termination of one of the usb 3 pins, if you plug it into a usb 2.0 or lower extension/hub it just wont work. You must have a usb 3 extension/hub, or, there are many DIY chargers that are probably cheaper than a usb 3 extension cable and definately cheaper than a usb 3 hub.
Even a usb 3.0 hub or charging station will not charge it. Usb does not provide the voltage required. Only the outlet adapter will work
Sent from my mopho
Are you saying that my cigarette outlet will be the only thing that charges this?
It won't charge it all with anything unless turned off. Guess I need to make a hybrid cable
Posted on the fly with my XPLOD Evo4G

[TUT]Fast Charging via USB port MOD

Anyone wanting to know how to fast charge using the usb port on your pc/laptop?
This usually takes ages compared to charging via mains lead, the hack itself is quite simple and involves modifying the usb cable
my results are as follows (these can vary depending on what you are using your phone for, what background apps running, etc.
charging with mains lead :
4.2v
998mah
mains ac
charging with STANDARD usb lead:
422mah
3.999v
standard usb
and finally the MODIFIED usb lead hack:
4.161v
782mah
usb hack
as you can see it is a 53% increase in charging compared to standard usb charging mah, and slightly under mains ac charging mah,
as my phone is always plugged in at my work pc or home pc or laptop or whatever this works out good
TUT:
use at your own risk this is for information purposes only and I hold no responsibility to any damage that may arise
using a micro usb cable (charging cable for htc phones)
cut it using a pliers half way through the cable
using pliers again cut away the thick black wiring, the red and black small wiring, and white and green wiring
from the usb port end to the microusb connect the black and red cables together so they join
from the microusb end short out the white and green cables together
from the usb port end leave the white and green cables, do not touch these
use insulation tape/solder to clean it up and then your cable is ready
I will make a mod for car chargers also soon
see attached image showing which wires to cut and which to join up and which to leave alone, if this helped you in anyway (it should help you ) then please hit the thanks button
this mod will trick your pc/laptop/htc into thinking that it is not a pc usb cable and will allow higher currents and voltage to your phone
you can check this with current widget from market place
once this mod is done, you cannot use the same cable again for pc/usb tethering or usb disk drive, only cable can be used for charging
Care to explain how you did it? I got a spare Micro USB cable willing to try and make a tutorial with pictures.
So you forgot to put the directions for the mod...
Sent from my Sensation 4g using XDA App
directions are up with a picture
Seems awesome, but I'd be way too scared to try that on my own. >.<
First of all im not against this mod. Just want to share my experience just this morning.
I charge my phone via the stock usb cable to my pc and leave until morning approx 7hrs. What happen now my phone Menu button become unresponsive tried different method, shake google for answer , but nothing work. Worst come to worse i may return the phone to HTC for repair. So for anyone want to try this be careful, this could be a problem with HTC as it could result more problem.
HTH
Sounds dangerous and a bit risky. Why not just use a USB y cable and a micro USB adapter?
http://item.mobileweb.ebay.com.au/viewitem?itemId=370586078337
Its not dangerous nor risky in my opinion...
I am using this trick since I owned HTC TYTN2 and I`m using it now.
Hmmm...
I always thought the different voltages came from the charging adaptor..
The phone adaptors have normal charging voltages so thats why charge normal speed... however PCs have lesser voltage due to USB ports. I think the PC voltage varies on the device that's plugged in.
Thus, we can use the same cable for charging with an adaptor and also for data transfer and the phone knows what its plugged into.
Pardon me if i'm wrong... could be a misconception i had
Why go to that bother when you can just plug in the adaptor!
Sent from my Sensation using Tapatalk
thunderskain said:
Hmmm...
I always thought the different voltages came from the charging adaptor..
The phone adaptors have normal charging voltages so thats why charge normal speed... however PCs have lesser voltage due to USB ports. I think the PC voltage varies on the device that's plugged in.
Thus, we can use the same cable for charging with an adaptor and also for data transfer and the phone knows what its plugged into.
Pardon me if i'm wrong... could be a misconception i had
Click to expand...
Click to collapse
It's got nothing to do with the voltages, they are the same. The phone senses that the data wires are not connected together (open) and presumes that it is plugged into a pc / laptop usb port. Because of this the phone then restricts the current it draws from it's source so that it doesn't cause damage to the pc / laptop usb power supply.
Inside the phone charger the data connections will be shorted out so the phone knows it's the charger and can draw full current.
There is a chance that it could damage the pc / laptop if the usb port supply is not rated high enough
Just to update the thread, I've been using this for the last year and a half on all the HTC's I own and no issue at all,
I can connect my phone to my laptop if i dont have access to mains
I can use the cable in the car to a usb charger (which charge slow for some reason)
there are many reasons i.e. in work where I can only use a usb port and no extra plugs for a/c, it means I don't have to carry a plug around with me just a usb cable,
A good post, the issues around drawing to much power could effect older laptops
If I understand correctlly USB3 has the ability to supply more power than USB 2
Anyone any idea if this would reduce charge times without the mod?
battery will die soon enough...
you should place a 220 Ohm resistor between the data lines (green and white) if you do that, you will be able to use the where it was intended for, data
with the 200~220 Ohm resistor the phone recognizes the connection as AC-charger. i dit this with a DealExtreme carcharger
source: http://www.ifixit.com/Guide/Upgradi...-current-to-HTC-Hero-and-other-devices/5172/1
If you can get to the ID-pin of the USB-connector (pin4) and connect the following resistors to GND, you get interesting USB modes
Dock-mode = 44-49 kOhms
Car-dock = 5-16 kOhms
source: http://forum.xda-developers.com/showthread.php?t=1185431
I've done this, and soldered all the cables in the right positions, now I'm testing the charge times between this and a normal usb cable on my HTC G1.
First thing I noticed was that my phone says charging via AC, instead of usb.
Will edit this with the results.
Edit : Been a while, forgot about this, so I forget the exact numbers, but my phone charged around 1 and half hours faster with this mod, and yes, it was on USB 3.0 so its quite good.
Worthless to try if you don't have USB 3.0.
Sent from my GT-I9100 using xda premium
Does this mod increase charge with main AC lead that output 2A e.g. Ipad charger head???
usb3 provides up to 900ma
so usb3 should work without any problems
this is usb specification
http://www.usr.com/education/peripherals0.asp
by default usb2 provides 500ma unless it is asked for more by the device, this is where the mod of the cable comes into play, it provides up to 1000ma with this mod
johnerz said:
If I understand correctlly USB3 has the ability to supply more power than USB 2
Anyone any idea if this would reduce charge times without the mod?
Click to expand...
Click to collapse
I have an Notebook with USB3.0 and also Power-USB. (Power usb only works with a dockingstation).
The charging is also bad. Takes about ~4 hours from 2% - 100%.
I thought about power reducement by phone, when dataconnection is available. Now I know it for sure :-/

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