Dear all,
Out A510 went to bricked-moded and didn't start up again. I first assumued it was the battery, but i also ready about that the power-button might be faulty. When i dismalted the Tablet, i recongized that the small vibration-motor starts when it is in contact with GND. Is ther any option to short-cut something on the board.
I would like to know if it is the power-button or the Mainboard.
Thank you for your help
Kai
I noticed that the Sevice-Manual diretly jumps into Replace Mainboard, which i want to avoid (when it leads to this power-button issue)
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I have messed up with my mobile and power button is not working properly. Even if I just touch the button, power menu appears and my restarts. Some service guys said there is a problem with the motherboard.
I found on this THREAD to map hardware keys for android phone. I did install Buttonremapper but power button option is not available for mapping.
Are there any other applications available?
I am also planning to sell this phone. Anybody interested? :angel:
If it's a loose contact, it can b solved by gently hitting the phone's side on a table/wall.
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There is no loose contact
I had given that mobile for repair. The first time they repaired and later replaced the button itself but the problem persisted. Service center person mentioned there's a problem with the motherboard. Adequate power supply is reaching for the power button. It is even damaging the phone battery. I have already replaced my phone battery twice.
Hello,
[admin; if this post is more appropriately placed somewhere else in the forum, then please move it]
Before giving up on my cellphone and resort to ordering a new one I'll ask for help here too.
Phone is a Kolina K100+ (chinese phone) running android 4.2. It is rooted but it is still running stock ROM (to my knowledge, I bought it new and have not tinkered with the ROM).
Current situation is that the phone is completely dead.
Dead as in turned off, does not light the LED when inserting the charger cable, does not react to any button presses, or combination of button presses.
I have actually no idea what have caused this situation. Granted, the phone has accidentially been dropped twice the last week but it did not turn itself off at any of the occasions. Yesterday, I noticed that the phone had turned off and I tried to turn it on. After a while I got it to go at least to the boot screen but after having to put it away (was actually standing in a line and it was my turn...) it was dead when I was able to reach for it again and after that the phone has been completely dead.
When connecting the USB cable to the computer the computer detects an unknown USB device but cannot seem to install any drivers.
Button combinations I have tried;
- power on button
- long press (~1minute) on power button
- volume down + power button
- volume up + power button
- volume up + volume down + power button
- home button (touchscreen button that is) + power button
...no luck with either combination, no reaction at all from the phone.
I have also managed to pull off the back cover from the phone and was able to disconnect the battery connector and let it lay completely powerless for a few hours before reconnect the battery to the phone and reassemble the back cover.
Any suggestions on if there are any other measures I can do or if there is something I have overlooked in trying to resurrect it?
same problem here phone just stop work i dont know why .
malamas said:
same problem here phone just stop work i dont know why .
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Do you still have the phone? I would buy it! I need the LCD but I could not find any...
Oltcit said:
Do you still have the phone? I would buy it! I need the LCD but I could not find any...
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Click to collapse
sorry im late. i have the phone like a new contition . if you like to buy i give you but im live in greece
Hey guys,
I need some urgent help.
My Nexus 5 device is not booting. It stucks at the bootlogo then powers off and restarts again.
Normally it wouldnt be hard to fix such an issue but the problem is :
I can't boot into bootloader (bootloader appears for 1 second then phone powers off)
I can't boot into Recovery mode (Recoverymode appears for a second then phone powers off)
I can't get my phone into fastboot mode, - it appears for a few seconds durign the bootloop as an "unknown device", but I am not able to flash a new bootloader/factoryimage.
I tried like every possible option what I can do, but nothign worked for me.
What else can I try since I can' get my phone into fastbootmode?
Bootloader is unlocked
Secureboot is enabled
(from what i can see in these 2 seconds where the bootlaoder pop's up)
Is there a way to recover my nexus5?
Symptoms of broken starter button
Posté depuis Nexus 5 / Miui7 by Miui-France
Remove the motherboard and clean around the power button. When you have cleaned around the power button, quickly press and release the power button using more pressure than normal a few times, try to boot again.
Thanks for the tips!
I never thought that a broken Button could cause this issue.
I will check it as soon as I am home.
But how am I supposed to clean the motherboard, and I don't understand how cleaning the button from the outside
of the case should help to solve this problem.
Can you guys explain it a bit more detailed please? ^^
Are there good and very detailed tutorials for this?
And yes, you ideas definitely make sense because some days earlier when the Nexus5 was still
booting fine, I remember that I sometimes had the issue when I turned of the display with the power button
it instantly turned on again and I had to turn it off like 3-5 times until it really was off (standby).
To clean around the power button, you'll have to disassemble the phone which is not hard to do it you take your time and use the right tools.
https://www.ifixit.com/Teardown/Nexus+5+Teardown/19016
I noticed that the issue really was the powerbutton, - however the button was broken and
not repairable by cleaning. To repair the phone I would have to purchase a new motherboard.
In the end I decieded to purchase another phone, just saying that if someone will have the same issue in the future
try to clean first, if that wont help the powerbutton is most likely broken, and this results in a new motherboard-purchase because
the button is not repaireable by hand
The power is replaceable if the damage is confined to the power button itself.
I'm hoping someone who knows the behaviour of this phone can help.
I changed the power / volume up/down buttons after taking the phone apart. I followed a rather good guide here: https://www.youtube.com/watch?v=1jX4PWIw0f4
After plugging it all together again, I tried to start the phone without the cover on. It started fine, and my stuck volume down button problem (causing safe mode) was fixed.
I then put the phone back together properly. Since doing that, it won't start.
Phone doesn't have SIM or SD card inserted at the moment.
If I unpug the battery and power via the micro USB port, the red LED is faintly on, the phone looks like it's booting with the Sony logo appearing for about a second before all going dark and repeating the process.
Question: is that normal behaviour because battery is missing and phone will refuse to boot without battery?
If I connect the battery, phone will no longer start. Holding down the power button doesn't work. I also tried plugging in the old strip where the volume down wasn't working (but power OK) and no difference.
This would suggest the battery has failed. The outer aluminium foil is broken at the bottom following me taking it out first time - Sony use stupidly sticky stuff to hold it in place and it seems to stick to the aluminium foil far too much causing tears when removed.
But if phone should boot without battery and currently isn't then it isn't (just) the battery.
So can anyone offer and advice on how to proceed? I'd like to avoid spending $500 on a new SIM-free phone if I can!
The phone is switched off due to a fall impact which caused slight movement to the battery interrupting the power. Is there any way to boot without those important keys? It's stuck on the battery charging screen when I plug in the cable and I can't think of any other way to bypass that to access recovery or download mode because if I do, I can boot the phone from either of those two using adb or fastboot commands. I can't do anything on the battery charging screen. Is there a reset pinhole or something in this phone? Is this a dead end?
(I'm noob)
Option 1: Unplug battery from circuit board, and unplug usb plug. At this stage, the phone is off. With battery unplugged, press VolumeDown button and plug in usb cable (the usb cable must be powered either from charger or computer). The phone should start in bootloader mode. If you want to enter recovery, you must plug back in the battery connector to the circuit board, other wise the phone will just turn off. Then proceed with ADB/Fastboot as you suggested. (Tested this method right now to make sure it worked before posting)
Option 2: You may have a chance a starting the phone by short circuiting the pins to which the PWR and/or VolumeDown buttons are soldered to on circuit board.
I tested this method because my PWR button was broken and was acting like it was always pressed which forced a reboot each time. I unsoldered it and dismantled the button, clean inside it by scrapping off dirt and recreating the bend or dome shape of the button mechanism. I then finished by re-enclosing the button and then soldered it back to the circuit board. It worked fine, until next morning upon wakeup I decided to resolder the button because it wasn't perfectly parallel to the side of the board. By re-soldering, I destroyed the solder pad and was never able to solder it again. The phone is not usable as a daily anymore, only usefull for surveillance cam or server...
Edit: found this thread that may be usefull for you.
https://forum.xda-developers.com/google-nexus-5/help/life-power-button-tips-how-to-make-t3410081