Hello,
One day when I woke up I discovered my phone with a black screen, is it dead?
When I plug it into my computer I see it on the COM port but I can't see the files inside.
Nothing is displayed on the screen and the notification LED does not flash!
I can't put it in fastboot... Can I try to do a flash or command line manipulation via the COM port?
Someone told me that the motherboard is dead, do you think this is possible?
Possible battery failure, a ribbon cable detached or a mobo failure.
Any swelling is a battery failure.
blackhawk said:
Possible battery failure, a ribbon cable detached or a mobo failure.
Any swelling is a battery failure.
Click to expand...
Click to collapse
No I disassembled the phone, the battery is good, and I disconnected and reconnected all the cables xD
Normally there is only a motherboard problem, but why can I see the phone when I plug it into the PC?
RS MAN said:
No I disassembled the phone, the battery is good, and I disconnected and reconnected all the cables xD
Normally there is only a motherboard problem, but why can I see the phone when I plug it into the PC?
Click to expand...
Click to collapse
If the battery is good and the mobo is getting power maybe the power switch or a failed ribbon cable which is almost unheard of unless damaged while handling.
Otherwise if the phone is completely unresponsive it may be a mobo failure. If so recovery options are zero in it's present state.
Related
Hi guys,
I stupidly plugged my Nexus One USB cable into a higher voltage charger in my car, about 8v-10v I think, and I could immediately smell burning. I unplugged it straight away and the phone died. The result was;
1. I could no longer charge it off the wall charger or computer USB charger, just got zero response, no led's etc.. seemed as though the phone was totally gone.
2. Then I took the battery out and charged it in my external battery charger. When I put the battery back in the phone it turned on and worked perfectly!!! although the battery didn't seem to last as long.
3. When it was powered on an working, it wouldn't pick up the USB connection to my PC. Did nothing.
So.... it seems as though the USB port is obviously not working. Would this be the extent of the damage or would it be something more serious in the phone?
Would the official Google dock allow me to charge the phone and connect it to my computer given that it uses the 3 pin method and not the USB?
Any help would be greatly appreciated.
Cheers,
Morgan
Ahhhh the smell of a resistor going. And within a circuit when one major component goes it will drag some others with it. Which could explain short battery life. Back up your stuff. And look into your options to replace device. Unless you have extencesive knowlege on micro surface mounted printed circuit board components and measureing values.
good day.
I don't have any knowledge of circuit boards so is there any other options to repairing this device? It is basically brand new!
Is there any chance that a dock would allow me to charge it?
If not, can I replace the main board? I disassembled it yesterday and know how to change it out.
spartain27 said:
Is there any chance that a dock would allow me to charge it?
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Click to collapse
Just guessing, but no. The cooked components for the charging circuit would also be in parallel to the dock port.
spartain27 said:
If not, can I replace the main board?
Click to expand...
Click to collapse
If you can find someone to sell it to you. yes
spartain27 said:
I disassembled it yesterday and know how to change it out.
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Click to collapse
There goes any hope for a warranty claim.
good day
Hello guys, i am hoping that you can help me because i don't know where else to turn. I purchased a Verizon note pro 12.2. I was using it and on for about two weeks until i got my surface 3. Two days ago i went to use it and it wouldnt turn on. I assumed it was the battery so i put it on the original charger for about an hour and attempted to turn it on. It booted to the Verizon logo then flickered off. I put it back on the charger overnight thinking that would fix the problem. When i attempted to turn it back on it loaded to the Samsung splash screen and then turned off again. When i plugged in the charger once again the grey battery icon came up saying the battery was 100%. Even with the battery saying it was 100% it still wont turn past the splash screen. This only happens when it connect to the charger. it doesn't do anything at all if it is not plugged in. I have taken the battery out and reconnected it... still nothing. Looking at other post i assumed it was a software issue so i tried to sideload a stock version (Cant use odin because the tablet cant even boot into odin mode) of P905VVRUANK1 which is what the tablet was running. I got the error footer is wrong security authentication failure. I dont know what to do. Please help!!
correction i did not sideload (wrong terminology) i tried to flash through recovery mode.
mcdobson said:
correction i did not sideload (wrong terminology) i tried to flash through recovery mode.
Click to expand...
Click to collapse
Probably you have a loose or cracked battery connector. Try this, power on while pressing hard on the back near the center ( location of battery connector ). If it can boot this way, you need to re solder the battery connector.
Beut said:
Probably you have a loose or cracked battery connector. Try this, power on while pressing hard on the back near the center ( location of battery connector ). If it can boot this way, you need to re solder the battery connector.
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Click to collapse
I have tried this but still nothing. I also switched out the battery with another note pro and that tablet powered on with no power. when i tried to use that battery in mine i still got the same result.
mcdobson said:
I have tried this but still nothing. I also switched out the battery with another note pro and that tablet powered on with no power. when i tried to use that battery in mine i still got the same result.
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Click to collapse
I have seen this problem in many Tab Pro or Note Pro: it cannot turn on even with full battery. When battery connector's pins are open or cracked, your tablet won't be able to turn on. There are too many unknowns such as USB charging port, battery connector, or battery. You need this tool to find out where is the problem:
http://www.ebay.com/sch/i.html?_fro....TRS1&_nkw=usb+voltage+current+meter&_sacat=0
When charging, current should be 1.7 Amps.
It sounds silly but I see many users cannot figure out the problem which simply comes from bad USB cable or charger or USB charging port. This tool will eliminate guessing.
Since checking battery connector requires experiences to know the solder joints are good or bad. My recommendation for your problem: Re solder the battery connector if everything else: USB cable, charger, USB port, battery are in good working condition.
Use another battery you won't see the difference if battery connector on main board is cracked or loose.
Cracked battery connector is very common in this tablet but most average users won't see it or don't understand why it's the source of problem.
Beut said:
I have seen this problem in many Tab Pro or Note Pro: it cannot turn on even with full battery. When battery connector's pins are open or cracked, your tablet won't be able to turn on. There are too many unknowns such as USB charging port, battery connector, or battery. You need this tool to find out where is the problem:
http://www.ebay.com/sch/i.html?_fro....TRS1&_nkw=usb+voltage+current+meter&_sacat=0
When charging, current should be 1.7 Amps.
It sounds silly but I see many users cannot figure out the problem which simply comes from bad USB cable or charger or USB charging port. This tool will eliminate guessing.
Since checking battery connector requires experiences to know the solder joints are good or bad. My recommendation for your problem: Re solder the battery connector if everything else: USB cable, charger, USB port, battery are in good working condition.
Use another battery you won't see the difference if battery connector on main board is cracked or loose.
Cracked battery connector is very common in this tablet but most average users won't see it or don't understand why it's the source of problem.
Click to expand...
Click to collapse
I do not believe that is the issue. the charger i used after the fact was a samsungng 5.3v charger thats belongs to the other note pro. im assuming if it was a issue with the amp that the other note pro would have the same issue... could it have something to do with the bootloader maybe.... or maybe theres a file i could flash that im just not aware of...
mcdobson said:
I do not believe that is the issue. the charger i used after the fact was a samsungng 5.3v charger thats belongs to the other note pro. im assuming if it was a issue with the amp that the other note pro would have the same issue... could it have something to do with the bootloader maybe.... or maybe theres a file i could flash that im just not aware of...
Click to expand...
Click to collapse
Beut was right all along...
Hello, so I've changed frame on my nexus 5 yesterday because the glass was cracked. Everything went well, except for one thing: the battery doesn't look like it wants to charge. I'm stuck at 0% from half an hour, and have tried different chargers and cables, but nothing. Could this have anything to do with the fact that I changed battery with a new one (oem) too? I sort of folded the flex cable there too much, but I don't think that's the problem because the phone powers up.
What about trying the old battery in the phone? Is it possible there is a damaged connector on the motherboard or the USB port is damaged? If the phone recognized by your computer when connected via USB port?
Hi guys,
I haven't been able to charge my phone properly for a while - after reset when I plug in the original charger, it charges fast, when I unplug it and plug it back in, it charges slowly. When I unplug it again, it still shows the charging icon forever but it won't charge when plugged in. Factory reset doesn't help. The phone also randomly shows the USB moisture message even though it never got wet. Changing cables and power sources doesn't help.
Build MHA-L29 8.0.0.375(C636)
Thanks for any ideas!
Blow out the USB charging port on the phone. Also, use a toothpick to GENTLY clean out the port of lint and dirt.
And use app that tracks your charging speed. Try ampere In playstore.
robogo1982 said:
Blow out the USB charging port on the phone. Also, use a toothpick to GENTLY clean out the port of lint and dirt.
Click to expand...
Click to collapse
Thanks for the reply. I tried that already. Is it possibly a battery issue? I wouldn't mind replacing the battery, which is cheap rather than replacing the phone because of such nuisance.
weyrulez said:
And use app that tracks your charging speed. Try ampere In playstore.
Click to expand...
Click to collapse
Thanks, good idea.
Ampere clocks in at -250 mA after reset. Goes to around 1800 when plugged in to a third party charger, which drops to around 300 mA when unplugged (phone indicates that it is charging). After reconnecting it goes up to 1000 mA. I don't have my Huawei charger at work but it's similar - at first plug in it charges fast, after reconnecting it switches to the slow mode.
You should use your original charger. And see if supercharge is working. If not. Give it a shot in a service center. Theyll fix your phone for free if you still have warranty.
weyrulez said:
You should use your original charger. And see if supercharge is working. If not. Give it a shot in a service center. Theyll fix your phone for free if you still have warranty.
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Click to collapse
I'll try that tonight, thanks. Unfortunately no warranty but I'll see what I can do.
domi_niku said:
Thanks for the reply. I tried that already. Is it possibly a battery issue? I wouldn't mind replacing the battery, which is cheap rather than replacing the phone because of such nuisance.
Click to expand...
Click to collapse
Well, before replacing the battery, try this:
- turn phone off
- connect to original Huawei Supercharge charger and charge up until 90% or so
- disconnect from charger and turn on
Use the phone as you normally would until around 35-40% remains, then try connecting the charger. If the issue persists, I still believe it is a problem with the charging circuitry rather than the battery. Especially if we take the moisture in the USB port message the phone shows. Replacing the USB charging circuitry should not be a big problem AFAIK, it is connected to the motherboard with a snap-on connector, replacing it should be easy as disconnecting the connector, removing the circuit with the port and placing the new one in.
Yep, I guessed it: https://www.youtube.com/watch?v=4avHFWjsz4k
Are you having issues where the phone is displaying 30 or so percent battery remaining, but the phone shuts down?
robogo1982 said:
Well, before replacing the battery, try this:
- turn phone off
- connect to original Huawei Supercharge charger and charge up until 90% or so
- disconnect from charger and turn on
Click to expand...
Click to collapse
That's a great point. I didn't know the USB circuitry can be replaced by itself. I don't have any issues with the phone switching off. It uses the battery all the way down to 1% or so. I don't see any erratic percentages. I'll replace the part and update you on what happens. Thanks!
robogo1982 said:
I still believe it is a problem with the charging circuitry rather than the battery.
Click to expand...
Click to collapse
Yup, that was the problem. Easy fix. Thanks for the suggestion!
Make sure your microphones still work. I had to replace my USB charging board (which also contains the mics) recently and the first one I tried had a bad mic. I could make phone calls just fine, but google assistant couldn't hear me. I got a replacement and both mics were fine.
domi_niku said:
Yup, that was the problem. Easy fix. Thanks for the suggestion!
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Click to collapse
I wish I could close this thread but a lot of weird stuff happened since I "fixed" the phone.
Since I bought the battery before I was told it could have been the USB board, I replaced the old battery too. The first charge was smooth and I drained the battery to 0 as recommended. I plugged it back in and it charged to 5% and stopped. I noticed a chemical burn smell that I later realized was coming from the USB circuitry. At this point there was no way to charge the phone but when tried to turn it on, I still saw the red charge icon. I opened it up and put the old defective USB board back in and I was able to charge it. Throughout the day I noticed weird battery drain that I saw recently before the replacement of the USB board. As usual, I tried to restart the phone to fix that but it won't turn on. The battery was at 85% when I shut it down. When I try to turn it on, it won't even show that red charge icon. Nothing. I can't put the old battery back to see if that's the problem, because I bent it during replacement.
Could it be a battery issue this time or is the phone just dead at this point?
Recently, my got hit by the floor i the back, and at this point every time i connected it to the charger it wouldn't charge saying it's cold.
I tried replace the wireless module, the battery and even the charging port module.
I also formatted the phone but nothing seems to be helping.
If anyone here has a solution for me, i would love to hear it.
avishyf said:
Recently, my got hit by the floor i the back, and at this point every time i connected it to the charger it wouldn't charge saying it's cold.
I tried replace the wireless module, the battery and even the charging port module.
I also formatted the phone but nothing seems to be helping.
If anyone here has a solution for me, i would love to hear it.
Click to expand...
Click to collapse
Sounds like a hardware related issue.
Does charging via USB cable work? Or via wireless charging?
The phone says that it's too cold to charge? If it is not that cold, maybe the temperature sensor is defect preventing the phone from charging the battery
It_ler said:
Sounds like a hardware related issue.
Does charging via USB cable work? Or via wireless charging?
The phone says that it's too cold to charge? If it is not that cold, maybe the temperature sensor is defect preventing the phone from charging the battery
Click to expand...
Click to collapse
High g impacts can damage chipsets, crack solder joints and... thermistors. May be just a loose connector but it needs to come apart to be repaired.
Get the battery replaced while it's being repaired.