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[Q] Can't charge, won't charge

Plugged in Transformer last night to charge it up overnight when the battery hit 30%. I updated the firmware yesterday morning and everything was going swimmingly.
Woke it up this morning, and found it was at 9% battery remaining and had a low battery warning. I had a closer look and the battery icon shows no indication that it's charging when it's plugged in.
Right now I've plugged it into a bog-standard USB charger and turned it off, hoping it'll trickle charge (damn the lack of a charge LED!) and that it's a fault with the power adapter rather than the device itself.
Anyone else had this issue?

I had the same problem a few days ago, my charger was plugged in via a multi block and it would not charge.
I even went to the extreme of taking my device back to comet in the hope I could swap the charger out with their demo unit.
Man behind counter plugs my charger into some sort electrical surge protected socket and it starts charging straight away leaving me looking like a right tool standing their. (and they tried to sell me 3 years extended cover)
Brought it home and plugged it into the very socket where it wasn't working and what do you know? It starts working!
Not sure what the issue was but it now works again.

Ok well that's good to know!
On trickle-charge it's now gone up by 2% since I posted.
Looks like the power adapter has its own faults...

Oh, and what do you know... plugged wall charger back in (it's been unplugged for 20mins) and now it's all happy and charging again.
Hooray.

yeah maybe that 20 minute trip to comet fixed mine too..

the USB mains adapter plug has a fatal flaw - the middle part of the usb connection isn't as sturdy as it sould be so it is easy to plug a USB port in the wrong way around and it looks and feels plugged in correctly as the middle part just moves out of the way.
If it isn't charing always check to make sure the USB connection is in the right way around in the plug.

I am bummed about this proprietary power connector; and apparently proprietary USB cable with extra pins (negating the use of USB extension cables). I wish the TF had a standard round power adapter similar to the Acer A500.

Thank God, i thought i was the only one. Had exactly this problem with mine when it arrived a couple of days ago, i am lucky enough to have lots of USB chargers around so i tried and tested various combinations and tried to charge other devices with the asus charger.
The problem lies as far as i can see, entirely with the charger unit. The charger comes in two parts, one is the usb dock and the other the relevant country plug. The way the plug fits onto the face of the charger is the important part. There is a central 'locating pin' made from plastic and two contacts that slot into the charger carrying the live and negative. The construction of this part is very, very poor. The tolerances are not a match for the quality of the plastic, the T shaped plastic locater does not actually locate the bottom pins properly and needs a great deal of force to lock in placce, and here is the best part, it doesnt like STAYING locked. As the plastic is weak, and we are looking at just a couple of mm here, it will snap, that will stop there being a clean contact and no charge. As a remedy, i have secured the face plate to the charger very tightly with a high tech rubber band
I agree, the use of specific power connectors in this day and age is just as dumb a decision as any manufacturer can make, and the rate it recharges at from a USB to PC connection can only be described as comical, a full recharge in 26 hours . Aside from all that its nigh on perfect, but i can see power related alternatives being VERY popular until Asus catches up with the rest of the electronics industry.

havent even had mine an hour and i havent done the update because its not at 50% and it will not charg at all. when i first tried to start it i thought it was doa because it would not turn on. guess ill take you guys advice and leave it unplugged for a while. i hate the charging cable is so small too that definately sucks.

Hmmm... if only a few other people created topics about not charging...

Power plug charging sometimes

I have a power plug and sometimes charges and sometimes don't. It also gets hot after about 10mins of charge but it is charging.
I know there has been a few faults but has anyone experienced this charging sometimes and hot to the touch?

The charger getting hot is a good sign; that shows that it is working. The charger will get (very) hot during charging and will cool off when it is done charging.
My recommendation to fix the sometimes charging/sometimes not charging problem is to pull the cord out of the plug unit and plug them back together. The cord is a little finicky and so it might need to be reseated. Make sure the cord is plugged ALL the way into the plug unit (it can be a little hard to get them to be perfectly together).

Hot Hot Hot
hipertec said:
I have a power plug and sometimes charges and sometimes don't. It also gets hot after about 10mins of charge but it is charging.
I know there has been a few faults but has anyone experienced this charging sometimes and hot to the touch?
Click to expand...
Click to collapse
I have called Asus on this issue and while they agreed to RMA the charger I just can't be without it right now so i wait. Chargers getting warm are normal, but chargers getting as hot as mine does is not normal and not good. I would estimate this charger is getting in the 160-180 degree range. Mine has also failed to charge on one occasion. One post i ran across said to change the polarity of the charger by turning it over so that the word ASUS is upside down when the viewing the outlet with the ground pin below the prongs. Seemed to help but not sure if its actually better or just wishful thinking, ymmv.

roryhawke said:
I have called Asus on this issue and while they agreed to RMA the charger I just can't be without it right now so i wait. Chargers getting warm are normal, but chargers getting as hot as mine does is not normal and not good. I would estimate this charger is getting in the 160-180 degree range. Mine has also failed to charge on one occasion. One post i ran across said to change the polarity of the charger by turning it over so that the word ASUS is upside down when the viewing the outlet with the ground pin below the prongs. Seemed to help but not sure if its actually better or just wishful thinking, ymmv.
Click to expand...
Click to collapse
Turning the charger over does not effect the heating of the charger, it simply eliminates the possibility of stray AC voltage on the shield of the cable and frame of the TF. The heating of the charger is caused by inefficiencies in the inexpensive charger and fact that it appears to be working close to its design limit. A few tips that have worked for me.
Use an outlet that good air circulation around it.
If used on an extension cord. sit on a heat conductive surface not on a carpet.
If tablet and dock are deeply discharged, charge separately and allow charger to cool between charge sessions.
If the charger gets too hot, it appears to shut off. Allowing it to cool generally gets it going again.

ASUS said i spoilt the power plug
sigh...i bought 2 units of EEE PAD **** TRANSFORMER...2 of the power plugs also loose...after 2 weeks of use...they said i spoilt the plugs and is not under warranty..i need to buy replacement...
how low quality is ASUS product or eee product...????

hipertec said:
I have a power plug and sometimes charges and sometimes don't. It also gets hot after about 10mins of charge but it is charging.
I know there has been a few faults but has anyone experienced this charging sometimes and hot to the touch?
Click to expand...
Click to collapse
The charger and plug for the wall are a 2 piece unit. Ensure that that end that contains the wall prongs is seated all the way down. There is a line between the 2 units. The pieces on both sides of the line should be flush.
Regarding temperature, mine gets pretty warm. Warm enough that I would not want to handle it.

[Q] Short circuit

Is a short circuit fixable? My touchscreen is unresponsive. I think I shorted my phone after using a samsung wall charger to charge it for 6 months. I noticed it had a different output voltage compared to an oem htc charger (.7A vs 1A). The phone still powers on. I tried discharging the phone and adding an aluminum foil to the grounding pin. The led indicator (orange/green) no longer turns on when charging by wall or pc usb. Would replacing the lcd and digitizer fix it? Thanks.

First off,your charger @.7 amps vs. the 1 amp stocker will not cause the problem you're seeing.
It would have if the voltage output was higher than 5 volts nominal.
The total drain of the battery *might* be screwing things up.
I'd pull the foil,if it's still in there and try another stock battery to see if that straightens things out.

Fazeh said:
Is a short circuit fixable? My touchscreen is unresponsive. I think I shorted my phone after using a samsung wall charger to charge it for 6 months. I noticed it had a different output voltage compared to an oem htc charger (.7A vs 1A). The phone still powers on. I tried discharging the phone and adding an aluminum foil to the grounding pin. The led indicator (orange/green) no longer turns on when charging by wall or pc usb. Would replacing the lcd and digitizer fix it? Thanks.
Click to expand...
Click to collapse
Voltage and amperage work together, they're not identical : ) the 1A will just charge a little faster, but as long as its around 4 or 5 volts, that's nothing to worry about. Also, changing chargers cannot cause a short unless you accidentally touch the outside USB pins together somehow, which is basically impossible to accidentally do. Not sure what caused your problem, but it wasn't a short.
Sidenote, even if you touched those pins, it would only short the charger and probably wouldn't even do any damage.

Have you try any method on this thread [FIX] [UPDATED] Touchscreen issues . It may gave you some idea's, I don't think the charger cause screen unresponsive except if it broken or get overvolted.

Touchscreen issues when charging

Anyone having issues with your touch screen when you are using it while it's chArging? Just wondering if i have a faulty device or are there others with the same problem
Sent from my HTC One X using xda premium

No my device does not have this issue when charging. I think this issue has something to do with the charger.

That's a grounding problem, had it with my SGSII try a different cable.

The sensation had an issue of touchscreen problems while charging. i went through 3 phones. The cause is the same cause as the wifi errors that people are having with the HOX. Bad connection from unibody(sensation) to board.. If we added aluminum foil or solder (just like the HOX wifi issue) it would fix the problem. On the sensation the problem got really bad to where you couldnt unlock the phone with the lockring. grounding issue. I hope the HOX isnt having that same issue and you just have a bum phone or better yet a bum cord or charger. let us know if its either

yeah happened alot on my s2, was due to usb cable or something
but works fine when im charging

It was the grounding issue, does this damage the phone? I have a wall outlet with USB ports so it might emit too much power
Sent from my HTC One X using xda premium

slojko said:
It was the grounding issue, does this damage the phone? I have a wall outlet with USB ports so it might emit too much power
Sent from my HTC One X using xda premium
Click to expand...
Click to collapse
Every time this has happened it has been because of what the USB cable was plugged in to and not the cable itself. Try the charger it came with in a regular plug. If it doesn't work better then it is a phone problem.

This happens to me too. Charging from the laptop with an eBay (chinese) cable causes the touchscreen to be unresponsive.
Here's how to test: Open the Notes and draw a few lines very fast.
Here's the results:
USB Charging
No USB Charging

Here is a video of it happening to me on my skyrocket. It was because of the charger. Try a different cable, then a different wall adapter.
http://www.youtube.com/watch?v=x__jdlGXyjk

It is because of the charger...it's always recommended to use the charger that came with the phone eventhough they give us a tiny a$$ USB cable.
Sent from my HTC One XL using Tapatalk 2

Yes, I have an issue - when the phone gets to 90%+ while charging, the screen becomes very unresponsive. The drags don't drag - instead the touches are registered as taps.
You can get an app like MultiTouch Test - and you will see, it's very clear to see when this happens.
My first One X device did not have this issue, so it's something specific to my current unit. Doesn't bother me much, since it only happens at 90%+ charge, while plugged in...

neocryte said:
My first One X device did not have this issue, so it's something specific to my current unit. Doesn't bother me much, since it only happens at 90%+ charge, while plugged in...
Click to expand...
Click to collapse
To me it doesn't happen all the time, sometimes it happens, sometimes it doesn't. Unplugging the cable and plugging it back in seems to temporarily fix the problem, if I leave it charging for a couple more minutes, I think the problem will come back, but again, unplugging/plugging it back, solves it temporarily. It's weird...
Oh, and all this to say that I observed this behavior while charging around 65%, not 90%. And I've only observed this while charging with AC power with the original cable and charger. The problem did not present itself (yet) while charging through USB.

Touchscreen While Charging
Nazgulled said:
To me it doesn't happen all the time, sometimes it happens, sometimes it doesn't. Unplugging the cable and plugging it back in seems to temporarily fix the problem, if I leave it charging for a couple more minutes, I think the problem will come back, but again, unplugging/plugging it back, solves it temporarily. It's weird...
Oh, and all this to say that I observed this behavior while charging around 65%, not 90%. And I've only observed this while charging with AC power with the original cable and charger. The problem did not present itself (yet) while charging through USB.
Click to expand...
Click to collapse
I just had this happen with the stock charger from my old HTC One using it on my HTC One X. Along with touchscreen problems it got VERY hot located as you are looking at the camera side it got hot on the top right side near the camera. Dunno what that could be. Both chargers are rated at the same voltage and amperage, I dont get it
jmdwyer

jmdwyer said:
I just had this happen with the stock charger from my old HTC One using it on my HTC One X. Along with touchscreen problems it got VERY hot located as you are looking at the camera side it got hot on the top right side near the camera. Dunno what that could be. Both chargers are rated at the same voltage and amperage, I dont get it
jmdwyer
Click to expand...
Click to collapse
It's caused by electrical noise. The voltage supplied from your mains outlet is alternating current (typically 50/60hz in frequency). a usb charger has to do two things; firstly step down the voltage (110v/230v/240v down to 5v) and secondly rectify the alternating current into direct current (positive and negative). how it does this is by using a transformer which employs an iron core surrounded by copper windings, this generates a lot of rf (radio) which travels down the cables to the device as well as broadcasting a short distance through the air, a decent charger will use shielding as well as a few other pieces of circuitry which will neutralize the rf given off. In order to rectify the voltage the charger will use a variety of diodes and capitors, in a cheap Chinese charger they will typically use as little as 2 and possibly a generic chemical capacitor (similar to a small battery) these degrade over time and can get quite hot, fat and eventually burst - when you hear about chargers exploding or setting on fire it's usually because the capitors aren't up to the job. a Chinese charger may have all the quality control and certification stamps but most of them are forged, if you buy a charger for less than $10 this is what your likely to end up with. the outputted voltage may appear 5v on a multimeter but they are a very dirty output and can spike from 3v to 7v or even more the load on the charger increases. The dirty output interferes with the mechanism used on touch screen devices which also employ a type of capacitance to register where you are pressing on the screen. A decent charger will use solid state capitors and which should last a lifetime.
if the smartphone miss behaves whilst charging 90% of the time it's because of a faulty charging device (or one employing poor components). a decent charger may cost more $20 but they are significantly safer for both you and the device.
The problem with mains sockets with built in usb usually comes down to shielding, they will either have none or be earthed (which might sound like a good idea but in practise a lot of domestic devices will create leakage to earth causing more noise - alot of studio equipment will have a separate earth). These may not be as dangerous as cheap Chinese chargers but still undesirable.
If a original or good quality charger isn't available one of the best sources for charging a phone will actually be a desktop pc with a usb3 port. The whole pc is insulated in a nice metal case and there are a plefora of high quality components to create a stable clean power supply (a cpu voltage tolerance is usually measured to 2 decimal places of a volt which is pretty good).
Ditch the rubbish cheap chargers, you honestly get what you pay for and they aren't good for the long term health of the phone. If it hums or makes a high pitch noise whilst plugged in your playing with fire - literally. they aren't bothered if your phone dies in 6 months or bursts into flames so long as they get the $5 x 100,000 people who buy them (these things literally cost pennies for them to put together, even though the case might look the business inside they are nasty and as cheap as)
Sent from my HTC One XL using Tapatalk

Very insightful. The worst part is that I have two original HTC chargers and they both emit the high pitched noise.
Sent from my Evita

timmaaa said:
Very insightful. The worst part is that I have two original HTC chargers and they both emit the high pitched noise.
Sent from my Evita
Click to expand...
Click to collapse
Some of the very small chargers might whistle a little, its called coil noise and isn't as bad as capacitors about to pop. The iron core hasn't been sufficiently dampened or glued into the case so it resonates when the ac passes through it, the pitch may change depending on the voltage (whether its a 230v or 110v power supply). It isn't unsafe but HTC should be doing a better job at checking the new chargers, over time most chargers will develop coil noise as glue tends to melt or degrade.
Very insightful video, you'll never buy a cheap charger again
https://www.youtube.com/watch?v=wi-b9k-0KfE&feature=youtube_gdata_player
The gist being the cheap chargers could very well set on fire and the USB could go live at mains voltage with no circuit protection, death traps spring to mind. Be careful what you buy.
Sent from my K701HBC using Tapatalk

Galaxy 10.1 n8010 won't charge. Tried all solutions.

So I bought a cheap cable from eBay that converts microusb to the proprietary Galaxy connector on this device. Tried to charge the device but it entered a bootloop. Unplugged the cable and tried charging with the stock cable and left it overnight. Woke up and the device was completely dead.
Wouldn't boot at all.
Tore it open, unplugged the battery and plugged it back in. It booted! BUT the battery was critical and it shut off immediately. Tried charging again, no dice.
So I unplugged the battery and applied 4v to get some charge into it. Got the battery up to about 3.6V, booted again and it showed 3%. So in the time I had with the device turned on I tried both cables again but neither would charge the device. I used a multimeter to test the stock cable and it was all good, I even did a beep test between the 4 USB pins in the stock cable and the places they're wired up to inside the note and everything was fine so it's most likely not the cable.
Anyway the 3% is long gone now and I can't boot or charge. The device and battery are fine and definitely working, it just won't charge through USB no matter what. I've tried different power points, different adapters including stock and normal usb ports.
I've also cleaned both the plug and the jack with a toothbrush.
Could it be that the internal charging circuitry got fried when I tried the dodgy cable? If so, is there any way to fix/bypass this?
I'm at a complete loss so any help would be greatly appreciated.
Regards,
Nas.

I would not recommend to charge battery directly outside the device or even remove the battery at all.
First you gotta make sure your cables are capable of charge other galaxy devices if a friend has Tab 7 or Tab 10.1 or other note 10.1 or another try your cables to see if they really work.
Because it may just be your cable, remember batteries have their own circuits boards of sort and batteries are sometimes picky on how they are charge especially OEM batteries that are not suppose to ever be out of the device unless are change for a new one in a repair.
So first of all cable check it a must, again is not as simple as check if all the pins works as this is not a simple USB (Universal Serial Bus) port is a proprietary port and cable, check the port in the tablet too.
As well it may be just a defective battery or worst case even a board problem.

Unfortunately I have no other device to test it with. I might just buy another cable and see how I go.
I know about the circuits on the battery, but I always thought they were just there as a safety measure due to the potentially volatile nature of Li-Ion when it drops below a certain voltage. I'll probably take your advice and stay away from charging it externally, I only did it once to see if the tab died or it was just a dead battery. The voltage never dropped low enough to trigger the circuit to 'kill' it, evidenced by the fact that I could get it back up to 3% just applying a constant voltage.
I'm guessing you've hit it on the head with the last sentence, might be a board problem which would be quite sad. Silly reason for a great device to die.
Thanks a lot for the reply, I'll update this thread once I try an alternative cable for future reference.

Ok, So to update:
I've bought and tested 3 separate cables, all provide 4.99V inside the device, but none of this makes it to the battery so I'm fairly certain it's the charging IC that's dead.
I bought a new battery that was charged to 40% so I was able to flash the device to see if it was maybe the custom kernel messing something up. Flashed to stock via Odin, still not charging.
From what I've read, I need a cell balancing circuit (since the battery is 2-cell Li-Ion) and a charging IC. I've found a suitable IC for fairly cheap, but I'm not sure if the balancing circuit is necessary. The battery already has one of these inside, but I'm not sure if this is just for Voltage/Current protection or if it also balances.
MP24AG: http://eng.it-m.co.kr/cnt/prod/tep_5l/MP24AG.pdf
If anyone knows I'd be very grateful.