Database Users

Charger Keeps Burning Out

Does anyone else's charger keep dying/burning out/burning up? I've had my TF since July and after 5 weeks it decided it didn't want to charge anymore, so I sent it to the Asus repair center in Houston, Texas and it came back three weeks later and everything was fine.
I just got my dock two days ago and pretty much had the tablet connected to the dock and the charger connected to the dock for almost all the time I was using it since it was taking forever to charge both batteries. By the end of the first night the tablet was completely charged and the dock went from about 4% to 80% during the whole time I had it charged (but I was using it at 1.4GHz with the screen brightness all the way up). While it was charging the power brick (the actual transformer lol) was getting really hot, almost too hot to touch, but I know those normally get hot when they charge stuff so I didn't think anything of it.
I tried to finish charging it yesterday and noticed that it stopped charging (again). I checked my AC power cables and everything was connected, I re-seated the usb end into the adapter, rebooted the tablet and tried connecting the charger to both the tablet and the dock. Neither would charge. I also tried the adapter in different outlets too. I'm not going to send it back to Asus this time since AFAIK there's nothing wrong with the tablet or the dock itself, I'm just going to shell out $40 and get one off of ebay. If that doesn't fix the issue then I'll send it back because I don't want to be without it again for three weeks.
Has anyone else had this happen to them more than once?

Funny you post this. Mine stopped charging last night. I know the cable is good because I can hook it to my computer and transfer data. However plugged into the actual power transformer, it will not charge. Tried many different outlets and did my best to make sure it was not damaged.

I think we need to find a good way to charge it from USB 3.0 ports on the PC by buying a PCI card or whatever, and keep the power brick for traveling
They seem very feeble
I still have my first one but it stinks of burned electricals

It's bull**** that they don't sell the chargers separately and there aren't any third-party chargers available. I think I'm going to try the charge from PC mod for my normal charging duties since my PC is always on and my PSU is 850w.
Why can't we just directly charge from a USB 3.0 port (or two of them for that matter with a y-cable like they do for portable HDDs)? I may have to rig something up with the help of my father who's an electrician

magicdave26 said:
I think we need to find a good way to charge it from USB 3.0 ports on the PC by buying a PCI card or whatever, and keep the power brick for traveling
They seem very feeble
I still have my first one but it stinks of burned electricals
Click to expand...
Click to collapse
The USB 3.0 port on a pc will not charge unless you want to leave it overnight turned off. The power connector/connector on the TF is a physical USB 3.0 connector, BUT not an electrical 3.0 connector.

If it's not an electrical connector (odd thing to call it since these run off electricity no matter how you spin it, but I know what you mean ) then how does it get charged using the power brick? Are there leads in the cable that are specifically for power and not for transmitting data (meaning they don't connect to anything in a USB3 port on your PC)?

I was able to fix mine by throwing my power brick into the freezer for about a half hour or so. I followed this thread.
http://forum.xda-developers.com/showthread.php?t=1284303
I was about 1 click away from buying a universal Dynex one that is on amazon and then read around, so far so good. Hope it works for you.

I just made my own PC charger and so far so good, I didn't even have to buy anything!
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brando56894 said:
If it's not an electrical connector (odd thing to call it since these run off electricity no matter how you spin it, but I know what you mean ) then how does it get charged using the power brick? Are there leads in the cable that are specifically for power and not for transmitting data (meaning they don't connect to anything in a USB3 port on your PC)?
Click to expand...
Click to collapse
Both usb 2.0 and 3.0 have one 5v power and gnd line with limited current capability. 2.0 has one pair of data lines. 3.0 has two pair of data lines. The TF power cord is essentially a 3.0 cable with coductor # 7 ( part of a data pair in 3.0) used to sense a gnd signal from the tablet to tell the power brick to output 15V on the normal 5v line. If the brick does not see the gnd on pin7, the 5v line only outputs 5v. This is why a 2.0 usb extension will not work.There is no conductor 7. Best bet buy the dynex video camera adapter and set itt for 15v to the usb connector.

[Q] Wireless Charging Problem

I bought a generic QI charger at DX and it worked well... once. The next day the phone was not recognizing the charger.
I really think that's a software issue because I tried a hard reset by flashing the original 4.4.2 stock rom image. it worked once and it stopped again. Then, I tried flashing stock again but it didn't work. Also, the charger seems to recognize that there is a device with wireless charging capacities but it turns off after 2 seconds.
Is there an activity or something that makes the system recognize the charger and start in fact charging? I searched a little bit but I can't find someone with the same issue

Have you moved the phone around on the charger? I have found out that the phone qi receiver is low on the phone and the transmitter is usually in the middle of the charger. That will give you the on/off back and forth.
Sent from my Nexus 4 using Tapatalk

BigCrisco39 said:
Have you moved the phone around on the charger? I have found out that the phone qi receiver is low on the phone and the transmitter is usually in the middle of the charger. That will give you the on/off back and forth.
Sent from my Nexus 4 using Tapatalk
Click to expand...
Click to collapse
Yes. I also searched the exact spot where the coil is located, it can't be. also, the charger recognizes de device

i had the same issue, it would detect then it would lose its connection, it comes down the the quality of charger, the magnetic pull is weak so it may drop after a few seconds, i ended up getting a better one,i dont exactly know why it droped even when the phone has not moved,
is your charger a small disc or a flat rectangle larger than the phone?

republicano said:
i had the same issue, it would detect then it would lose its connection, it comes down the the quality of charger, the magnetic pull is weak so it may drop after a few seconds, i ended up getting a better one,i dont exactly know why it droped even when the phone has not moved,
is your charger a small disc or a flat rectangle larger than the phone?
Click to expand...
Click to collapse
yeah, could be. I don't know, it's just weird that it worked once. It's a flat rectangle.

DTHayakawa said:
yeah, could be. I don't know, it's just weird that it worked once. It's a flat rectangle.
Click to expand...
Click to collapse
I noticed it has to be on perfectly, I have a small one and I'm noticing its difficult to get it to charge, it seems to tickle 90% of the time I'm thinking of opening it and do a few tests,
On mine it states, if the power is irregular the charger will disconnect and stop, intermittent etc, the light will display that, if the charger is not strong enough then It can do that aswell.
My qi is 1500mah output while my charger is 1200mah and its efficiency is 75%, so at 900mah its still fine for the nexus, I will test with a 2amp charger and hope it dosnt just make it hotter
Its anoying that this has not be a substitute to connecting it directly.

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This is how mine is positioned. The SIM card slot on the side is aligned with the charger coil on the phone, so you can use it as reference. Also make sure you're using a charger with not less than 2000 mA. Also try a different phone to test the charger if you can, just to rule out your phone as the problem. Good luck

republicano said:
I have a small one
Click to expand...
Click to collapse
Too much information.
Sent from my Nexus 4 using xda app-developers app

[Q] Broken microUSB port, not charging or data working.

Hi,
I don't know if I'm posting in the right section, but here is the thing. I've got GeeksPhone Keon Developer Preview, It's a Firefox OS phone, but I've flashed an Android version on it. Everything worked great for about 6 months, and then the phone stopped charging, and it was also not detected by PC. When I plug it to a PC the phone does not detect it's plugged in also the PC does not detect the phone. I tried other microUSB cables and it's the same. I also tried flashing the Android again as I thought maybe it's software related but the problem still exists. Hopefully I installed recovery on it. I currently charge the battery externally, everything else works as expected.
Yesterday I decided to mess with the phone, as I don't have the warranty. I opened it up and checked if the phone actually has power when plugged to the charger. I noticed that the battery is powered so It is charging but the Android OS does not detect that, and decreases the battery via software. I think that the D+ or D- pins are broken, and I'm not sure if they are used for the phone to know if it's charging.
Here is the picture of the circuit board and my findings. Camera is not great so the picture is not that great also.
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0. Is the microUSB port, and I guess there is a problem with it, maybe D+ or D- pins got broken.
1. Those are D+ and D- resistors they are good I've tested them.
2. Those are battery pins. When I probed them when micro USB is plugged in they have power.
3. It's some kind of a IC for power, I think it's used to switch power to the battery from microUSB.
I don't have that good soldering skills so I couldn't resolder the microUSB port, so I'm asking if someone knows another approach to enable the charging via software, as software does not detect that battery is charging, when actually power from microUSB comes to the battery, and because of that it decreases the battery status on Android.
So I'm thinking if I can execute some command so I can trick the phone to believe it's charging, so the battery will charge and when I plug it out I execute the second command to turn off fake charging?
Thanks in advance!

Funny that you have this problem, I just fixed mine today that had the same problem. Basically the micro usb port stopped working because the parts soldered on the motherboard were loose after too much wiggling (cheap mtk phone I guess). I tried resoldering but its just too small, I could not event test the connexions with a multimeter. So I went to one of the million of asian cell phone shops in indonesia where I'm actually travelling and paid 5$ for a guy to fix it. They do it all the time and have expert fingers. Not my phone plugs perfectly, try to find one near your place, wherever that is
Sent from my P5 using XDA Free mobile app

vita94 said:
Yesterday I decided to mess with the phone, as I don't have the warranty. I opened it up and checked if the phone actually has power when plugged to the charger. I noticed that the battery is powered so It is charging but the Android OS does not detect that, and decreases the battery via software. I think that the D+ or D- pins are broken, and I'm not sure if they are used for the phone to know if it's charging.
Click to expand...
Click to collapse
What happens if you put a charge over those connections? It won't accept any? Or does it charge but the software isn't detecting it? Another way of fixing it would be making a separate charger for your battery only, of course that would mean that your phone is useless while charging. I'm pretty sure if you force a charge over it it will absorb it, but I wouldn't exactly know how you could check the battery status so that you don't overcharge it this way.

[HELP] - Reverse charging

Can anyone help me, I got Reverse charging when I plugin with stock charger.
The phone still said "Charging" but the battery not coming up.
I have to reboot to recovery or fastboot to charge everytime.
I tried to reset factory or anything I could but nothing help.
Please kind to help me
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Most probably your charger is damaged...
Check your charger by plugging it into another device...

pranavkpr said:
Most probably your charger is damaged...
Check your charger by plugging it into another device...
Click to expand...
Click to collapse
Absolutely..
This used to happen when a connection draws OUT power from device.
Try with different cable/adaptor is recommended

I tried 3 but it’not worked
But when I boot to fastboot, Pc still can regconize my phone @@
When i turn off the phone, my phone continue wake, appear like charging, but auto turn off and replay this
P/s: sr abt my english

SBzBi said:
I tried 3 but it’not worked
Click to expand...
Click to collapse
If you tried another charger and it still doesnt charge...
Then take it to asus service center...the phone is faulty

pranavkpr said:
If you tried another charger and it still doesnt charge...
Then take it to asus service center...the phone is faulty
Click to expand...
Click to collapse
I found this : when i plugin charger phone not charge, but i reboot the phone while keep charger plugin, phone is charging
But when I plugout, and want to charge again, I have to reboot

SBzBi said:
I found this : when i plugin charger phone not charge, but i reboot the phone while keep charger plugin, phone is charging
But when I plugout, and want to charge again, I have to reboot
Click to expand...
Click to collapse
Hardware issue, get replacement device asap.

Hey did you get any solution? I am facing the same problem

akhileshr said:
Hey did you get any solution? I am facing the same problem
Click to expand...
Click to collapse
I reflash to stock rom and firmware.
Download this : https://drive.google.com/uc?id=12sL3C7McYRAiWbZINcuVh5yiV70y01Hy&export=download
Reboot phone to fastboot
Extract file to c:\adb folder and run file flashall_AFT.bat
your phone will clean stock, relock bootloader

Reverse charging pop-up
Pc does not detect my device , when plugged in socket phone is charging that time no pop up comes.
Any solution ?

venkyraja said:
Pc does not detect my device , when plugged in socket phone is charging that time no pop up comes.
Any solution ?
Click to expand...
Click to collapse
This happed to me as well. At first I thought of replacing the phone but then I realised one day I went out when it rained and there was some chance of water entering into the charging port so I used a hair dryer and put the phone deep inside a bag of rice for 2 days only at night and then the problem got solved. This may sound stupid but given it a try. Even the often pop up of reverse charging stopped from then. Hope it helps

Reverse charging notification appear when u plug otg cable. Between otg and normal usb cable has different pins connection to be worked with. It could be on phone female socket had some water inside, or conductor dusk, that make it became short circuit with otg pin, try clean it. If that didn't solve the problem, check if the pin inside got damaged or not, in some cases when i repairing phone, the water getting inside between the socket and the board, so u need to open the back cover to check it. Sometimes with just blowing it with hair dryer can clean the water, but there is another problem if its like salt water, the water can be dried out but the salt wont be dissapear and become a solid semi conductor type that make short circuit happens.

Facing problem of provide normal charging and data transmission
When I connect the mobile to the charger then it show the this message
==provide normal charging and data

I am facing same problem .what is the solution?

are u got any sollution for that reverse charging issue???????

same happens to my device also. can anyone help me!!?

I also facing the same issue
.reverse charging pops up everytime.And now my phone is not taking charge also

I have the same problem, maybe is dust or some liquid, on usb port, you can use some product cleans contacts for electronics, if not resolve, you need to replace the usb board, you can do it by yourself or leave it to a professional, be happy xD

Nexus 4 Not powering on at all. Battery dead or phone dead?

Hello. Recently I decided to pick up my old Nexus 4 again and try seeing what happened to it.
I was using my Nexus 4 one day and dropped it from my bed, about a foot or so, and it just cut out.
I opened it up to find out that the battery cable had snapped because I had done an earlier battery repair, and forgot that I should have let the cable slack a little bit.
A few months later I get a replacement battery, and tried booting on the phone. It would get to the lock screen and say the phone is critically low, and shut off.
TWRP said the battery was at 80% charge, but the UI was flickering a bit. I asked the XDA Discord and was told it was a storage failure.
A few more months pass by to now, and I decide to try and revive my N4. I want to see if maybe the battery was seated wrong, it could've been.
I reseated the battery and tried plugging in the phone. Now, I get a solid red light, that changes to flashing, and then nothing. or a flashing light that stays flashing.
I have not gotten past this. Is the battery toast, or is the phone toast? Can I test the phone without buying another replacement battery? Thanks.
- Honkette

You can try getting a V+ measurement from the battery to get an idea of it's condition.
If it won't charge it's cable or connectors may be damaged.
Even if the battery failed it should take some charge. Obviously it's producing some voltage but maybe not enough to boot.
If the battery seems to take a charge allow it the charge overnight and see what it's voltage level is. If it still won't boot it's either the battery or hardware damage, but doing this would give you more information to make a call.

blackhawk said:
You can try getting a V+ measurement from the battery to get an idea of it's condition.
If it won't charge it's cable or connectors may be damaged.
Even if the battery failed it should take some charge. Obviously it's producing some voltage but maybe not enough to boot.
If the battery seems to take a charge allow it the charge overnight and see what it's voltage level is. If it still won't boot it's either the battery or hardware damage, but doing this would give you more information to make a call.
Click to expand...
Click to collapse
I've left it on the charger multiple times, and the phone seemingly doesn't do anything. never gets warm. I tighened down the connector screws and am using a cable I know works. I'll try to get a measurement from the battery.

Honkette1738 said:
I've left it on the charger multiple times, and the phone seemingly doesn't do anything. never gets warm. I tighened down the connector screws and am using a cable I know works. I'll try to get a measurement from the battery.
Click to expand...
Click to collapse
Check the other ribbon cables, port jack/pcb, mobo etc. carefully for damage or looseness.

UPDATE:
I was able to get the phone booting, but now when i try and start android it immediately says "Power Off" "Shutting Down"
now what? bad battery? it's plugged in, it shouldn't do that.

Honkette1738 said:
UPDATE:
I was able to get the phone booting, but now when i try and start android it immediately says "Power Off" "Shutting Down"
now what? bad battery? it's plugged in, it shouldn't do that.
Click to expand...
Click to collapse
May be the battery as it may draw quit a bit of current when booting.
More than the charger may be able to sink.

blackhawk said:
May be the battery as it may draw quit a bit of current when booting.
More than the charger may be able to sink.
Click to expand...
Click to collapse
Should i let it charge overnight and try again?

Honkette1738 said:
Should i let it charge overnight and try again?
Click to expand...
Click to collapse
cable>charger>port>battery
Yeah try that. Eliminate the cheap possibilities first. Seems like a battery or power issue.

well that might explain it
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Yay!

Phones working, forgot to say this on Monday. Although the battery percentage is fluctuating after charging overnight under LOS 15 and 17, no clue why.

New battery's dead. I'll try and get another.

I know this thread's old, but i'll just update my results with this:
She's cooked.
I got the new battery, worked fine for a bit, but the battery percentage was completely jank and would go up and down. Not too long later, it doesn't even boot. I'm guessing the EMMCs fried. If I find a smashed up Nexus 4 locally i'll for sure do a mobo swap since mine's in really good shape physically.