faulty motherboard or faulty battery ? - Nexus 7 Q&A, Help & Troubleshooting

Hi, i have i tilapia 32 gb with latest bootloader and i used it during the last 2 year with a slimkat rom.
Now almost everytime it won't turn on normally. The screen is black ,i can't get into recovery or bootloader and charging the battery does nothing.
If i connect it to a pc ,first it shows apx mode on device manager, then if keep pushing the power button many times sometimes it starts and i can access to bootloader and recovery.
I wiped everything,flashed twrp again,tried other roms but almost everytime it won't turn on normally even if the battery is fully charged.
Do you think it is 100% a motherboard problem?
Is there some chance that replacing the old battery(i never changed the original one) will solve this problem? thanks

Most likely storage finaly died so you are out of luck

Related

[Q] SGS4 i9500 boot loop from hell.

I was checking Facebook when suddenly the phone restarted, but it got stuck at the first boot logo over and over...then i tried several steps to figure out what's going on.
*First I took the battery out, leaved the phone without it for about 5hrs, then I put it back and no luck... (The SD card was also removed.)
*Later I tried with a different battery and no luck, the phone keeps restarting over and over...
*Tried entering in Download mode and nothing works, the phone does not respond, and then it restarts...
*Tried doing a hard reset, but the phone does not respond to (vol up + home + power)
*Changed the SD card with a new one, nothing.
*The battery is not swallowed.
*The device was rooted and running Omega ROM V17 Android 4.3 (rooted it in December and had no problem).
WTH is going on?, if at least i could use download mode to fix it
(another thing that looks strange to me is that as soon as I put the battery on the phone, the device turns on intermediately and I think it's not normal because the device does nothing until the user turns it on.)
Please any help, this issue is over my head.
Thank you so much.
Download mode and recovery is available??
It can be 2 things:
- You have a faulty battery.
- You have damaged hardware.
No flash is going to help you. It's just bad luck.
Probably your power button was broken and stucked. If you still have warranty, send it to repair in samsung service center. This used to happen to my i9500 once.
Sent from my GT-I9500 using XDA Free mobile app

Note N910G very long reboot

I just bought a note 4 N910G .... I installed TWRP and flashed a custom rooted rom marshmallow... I noticed reboots are very very long (whatever types of reboot; normal, recovery or download mode)... I don't know if this happened because i flashed TWRP.
So, i flashed back stock unrooted 6.0 rom but the pb still persists... reboots take like 5 - 10 mins .... it has black screen thinking that it is turned off (pressing power button or any button does not do anything) but if i wait like 5- 10 mins, it actually reboots..
any clue?
yeahman45 said:
I just bought a note 4 N910G .... I installed TWRP and flashed a custom rooted rom marshmallow... I noticed reboots are very very long (whatever types of reboot; normal, recovery or download mode)... I don't know if this happened because i flashed TWRP.
So, i flashed back stock unrooted 6.0 rom but the pb still persists... reboots take like 5 - 10 mins .... it has black screen thinking that it is turned off (pressing power button or any button does not do anything) but if i wait like 5- 10 mins, it actually reboots..
any clue?
Click to expand...
Click to collapse
Its looklike bootloader problem clean flash rom via odin and see ....
I have done a flash of stock rom with odin.
it booted fine and I tried to reboot it (normal reboot)... since then my phone remains black screen.. no response... power button does not work
It does not turn on.... i plugged in the charger.. no led light (battery was 90% since my last flash).
Pulled out battery...still nothing
Tried pulled out battery, connect charger, pressed power for 60secs and put battery back... still nothing
seems it's dead...
yeahman45 said:
I have done a flash of stock rom with odin.
it booted fine and I tried to reboot it (normal reboot)... since then my phone remains black screen.. no response... power button does not work
It does not turn on.... i plugged in the charger.. no led light (battery was 90% since my last flash).
Pulled out battery...still nothing
Tried pulled out battery, connect charger, pressed power for 60secs and put battery back... still nothing
seems it's dead...
Click to expand...
Click to collapse
looks like its hard bricked sorry to hear that .you might try this in link below i made complete tutorial how to bring back to life
http://forum.xda-developers.com/note-4/general/tutorialhow-to-make-debrick-image-t3488082
and you can also request for debrick.img in link below thanks to @yashthemw
http://forum.xda-developers.com/note-4/snapdragon-dev/note-4-debrick-img-t3488114

Redmi 2 doesnt turn on until and unless it is connected to a charger.

Hey Guys,
My phone gets stuck in a bootloop if I don't use a charger while turning it on. Actually, doesn't even get past the splash screen and reboots every 1 to 2 seconds. I also need to connect it to the charger to access TWRP. Normally, when I disconnect the charger after the phone has turned on, the phone suddenly turns off. But when I do the same when I'm in TWRP, nothing happens and I can continue using it without any problems. I'll put the logs if you neeed. And yes, I don't need the charger to get into fastboot mode. I'm currently on lineage 15.1 unofficial but the problem persists over other roms too. Please help...
Change the battery
It's the battery , which is under performing with the voltage needed to run the rom process,
That's why you are able to use with charger and got bootloop without charger. In twrp or any recovery mode most of the hardware is disabled and does not need much power.
Telling you with personal experiences
jakir69 said:
It's the battery , which is under performing with the voltage needed to run the rom process,
That's why you are able to use with charger and got bootloop without charger. In twrp or any recovery mode most of the hardware is disabled and does not need much power.
Telling you with personal experiences
Click to expand...
Click to collapse
Thanks!! It worked.. I got my battery replaced and not my phone is as good as new ?

Rn7 global died all by itself

The phone rebooted by it self, no firmwareupdate going on, just random reboot.
Got stuck on redmi logo.
Could reboot and get fastboot, but could not flash original fastboot rom, got errors. a normal reboot gave only redmi logo.
Now the phone is out of power, not taking charge, not powering on.
Anyone have any solution for this problem? Or any tips? The phone is stone dead
Not sure if this will help...
here's my random reboot thread and fix
Well, i have no simcards or sd-cards inserted.
And its not charging or turning on. volume up and down + power is not making any results.
The weird thing is that it said "redmi" on the display for about 24 hours draining the power, and after it died out of power i'm unable to do anything with it. its basically a brick.
This happened totally random. just a spontaneous reboot into a never ending redmilogo.
During redmilogo i had the posibility to get it into fastboot by rebooting it, but mi flash would not accept the phone. so another reboot into regular boot ended in infinite redmilogo again :|
Your phone's bootloader unlocked?
Nope
Did you try keeping it charged for a while? Device might not show any sign (charging indication) but the battery will get charged eventually (I guess).
Charge it well and try to SIDELOAD that FASTBOOT IMAGE via PC..
It loooks like its bricked all by itself. i left it in charger for days.
I got contact with the phone with mi flash, but it has gone into some authentication mode with the flashing, so i'm not possible to reflash rom without authorization.
Read about this on reddit, and it seems like a dealer has to look at it.

Won't power up or boot into download/recovery after interrupted update

Please help! My S5 Neo was in a drawer for a few months after the LCD got smashed. I recently bought a new LCD assembly and connected it to make sure it worked before fitting and it was fine. However, the phone immediately started doing a software update but was interrupted after a few seconds as the battery was dead. Now the phone won't power up or boot into download mode or recovery. When I plug the phone in to its charger, the LED flashes red but nothing is displayed on the screen. I had a new battery for it and charged it in another device but still no joy. I've been messing around with old galaxy phones for a couple of years now, flashing custom ROM's etc, so I wanted to just re-flash a stock ROM into it but there's no way I know of performing this without getting the device into recovery or download mode. Does anyone have any ideas? The device is totally stock and hadn't even been rooted. I'm currently using an S4 Active running Lineage OS 17.1 so I'm not desperate for a phone, but I loved my S5 and really would like to get it up and running again. It never once had any problems.

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