Hi everyone,
I accidentally punctured the battery of my Huawei p-smart+ when trying to remove the back-cover.
The batter went on fumes, I got a new original one and replaced it. I also had to replace the LCD unit, since the flex cable broke.
Now, while I can see battery charge animation, if I press the power button even for 10 seconds, the phone won't turn on.
Is there a way to turn on the phone? Is it possible the the battery damage compromised the mother board, for some reasons?
I also should mention that, the little flex cable of the fingerprint sensor has gone, I don't know if this prevents the phone to turn on.
Thank you very much in advance.
C.
Connectome said:
Hi everyone,
I accidentally punctured the battery of my Huawei p-smart+ when trying to remove the back-cover.
The batter went on fumes, I got a new original one and replaced it. I also had to replace the LCD unit, since the flex cable broke.
Now, while I can see battery charge animation, if I press the power button even for 10 seconds, the phone won't turn on.
Is there a way to turn on the phone? Is it possible the the battery damage compromised the mother board, for some reasons?
I also should mention that, the little flex cable of the fingerprint sensor has gone, I don't know if this prevents the phone to turn on.
Thank you very much in advance.
C.
Click to expand...
Click to collapse
Yes, it sounds like you have caused some kind of hardware damage.
Sent from my SM-S767VL using Tapatalk
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I dropped my phone and shattered the screen. afterwards, the phone started behaving weird, the screen was purple with yellow static, but it still worked. So I bought a replacement screen and replaced it, but after the replacement, the same behaviour persisted. I googled it and found out that it might be the usb flex cable, so I replaced that. After the replacement it worked fine for about half an hour, then it just went black. Now when I turn it on, the backlight turns on, but nothing is being displayed. If I press down on the flex cable connector I get that purple yellowish screen that I had before, but as soon as I lift my finger, it goes black. Did I damage the connector on the motherboard or did I break the flex cable when replacing it?
Perhaps
not very helpful, but thanks anyways
I soaked all the components except the screen in alcohol for an hour and let them to dry, but it's still the same. By the way, I tried the old flex cable as well and it behaves the same.
entipck said:
not very helpful, but thanks anyways
I soaked all the components except the screen in alcohol for an hour and let them to dry, but it's still the same. By the way, I tried the old flex cable as well and it behaves the same.
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Hi there, sorry to resurrect this topic, but I'm having this same issue, just wanted to know if OP found a solution to this.
aquilesboy said:
Hi there, sorry to resurrect this topic, but I'm having this same issue, just wanted to know if OP found a solution to this.
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Click to collapse
the solution is to resolder the connector of that flex cable on the nexus 5 mainboard. Use a heatgun and heat it up until the solder smelts, you can add some flux before that. That should fix it
234herobrine432 said:
the solution is to resolder the connector of that flex cable on the nexus 5 mainboard. Use a heatgun and heat it up until the solder smelts, you can add some flux before that. That should fix it
Click to expand...
Click to collapse
Thanks for the reply, I'll try that, recently the USB data stopped working, PC doesnt recognize the device anymore but I guess it is still charging because it hasnt turned off.
First i must say hello to all recently i have bought 2 phones one for me and another to my girlfriend the phones are a moto g cdma from verizon mine is working ok but the other stopped working after a fall
My girlfriend had the phone but then fall to the floor
The phone shut down, also the lcd was completely broken, but the digitizer was intact. so i know that the digitizer is fused with the lcd, so if i need to replace it i just need to buy a new lcd+digitizer. alright let's tall about the logic board and battery
i oppened the phone and test the battery it says 3.7 V with a friend multimeter and i have removed it.
when i diassembly the logic board from the screen also took off the front camera, the flex also broken, but since the screen will not work anymore this will not be a problem i think.
well i just got the logic board, and wanted to connect to my pc to recover the photos but when i did it the pc didn't recognized it but when i connect it to my pc or a wall charger, a white light (notification led) turns on and doesn't turn of only if i disconnectthe usb cable.
i thought that i need the battery connected to turn it on. i just connected the battery flex , and connected it again. this time the led won't turn on instantly. just like a minute and then the notification led turns on, i don't know if that means that the logic board is broken too.
i just need to know if i need to connect the screen also to turn it on? because i don't want to purchase a replacement and see that the logic board is not working too.
if you have some thoughts to share with me just write here, please i hope you can help me
thanks in advance, henser.
Hi all
I have had my nexus 5 for a while now and just as i was flying overseas some strange things happened.
First the vibration stopped working which i knew was a loose connection on the back of the phone. Holding that area down would get it working again. Then the touch display stopped working. The LCD worked but could not touch anything to unlock the phone. I disassembled the phone and assembled it again and strangely it worked again although i didnt see anything obvious. Then is happened again...
I disassembled the phone and played around with it for a while and noticed if pressed down on the connection where the flex cable connects to the motherboard it would work again. but when i would release the pressure it would be funny again. I did this a number of times until eventually the whole LCD/blacklight should shut off. Now i can rarely get it to display anything. The phone is working because the LED light would flash and i can hear the messaged coming through. I just cannot see anything.
I replaced the flex cable with a new one and still the same issue. I replaced the LCD + digitizer + frame and still the same issue. I guess its the motherboard. Can i fix this ??
Now for some more issues:
I bought a broken Nexus 5 while overseas and i swapped the motherboard out and everything works! So it as definitely the motherboard. However, the second motherboard is having issued the the battery. I have every indication the battery is charging. However the battery percentages is stuck on 40%. It would flicker around 39% 40% instantly and when looking at the battery graph on the phone it is noisy, it is not a constant line. The percentage is not a true indication of the battery charge. I cannot get the phone to turn on just by the battery itself no matter how long i charge it for. I have swapped batteries out and i still get the same issue. I have swapped flex cables and still the same issue. Could it be that the second motherboard is also damaged??
I used the amphere app for a while while i had some power and it shows 100mA while charging but a voltage of 0V! When I unplug the cable it will shutoff. Sometimes i cannot even boot it up while charging.
Amphere showing 1%
h**ps://drive.google.com/open?id=0B9KF5ld-Rlu_VWY2eHA5VXE4R3M
What is wrong with these two motherboards?! I do not see anything obvious on the board itself.
I now see the new Nexus 5X is out but i am hesitant in buying it...This is the first phone i have had major issues with.
PS, i gave the latest updated
Thanks for your help guys. I will provide whatever information i can.
It sounds like your 1st phone is having the same problem I have with mine, which is described here: http://forum.xda-developers.com/google-nexus-5/help/main-board-socket-flex-cable-super-t3217281
Use a magnifying glass to see if any pins on the socket are broken. I still don't know if it's fixable.
ourandroid said:
It sounds like your 1st phone is having the same problem I have with mine, which is described here: http://forum.xda-developers.com/google-nexus-5/help/main-board-socket-flex-cable-super-t3217281
Use a magnifying glass to see if any pins on the socket are broken. I still don't know if it's fixable.
Click to expand...
Click to collapse
thanks for that. I believe this is the same problem also.
Although i cannot find any abnormal pins...
Macro shots of suspect connection:
https://drive.google.com/folderview?id=0B9KF5ld-Rlu_S2hwUDhlQUJlN2c&usp=sharing
Hello XDA-Forum
I dont know where to post the thread, because it belongs to every smartphone brand. If you have an other opinion to that, feel free moving or deleting it.
But now..introducing myself,, a crazy dude and android noob², who tried to fix his bootloop issue since yesterday 3 p.m./15:00 Uhr and 10 minutes ago, before started writing that post, I found my solution.
Smartphone: Huawei P8, GRA09
What causes the bootloop? The fault display
What causes the defect? It felt from my hand on an oven door corner and ended on the ground.
What happened while and after its flight?
1st was turned off instantly,
couldn't turn on by pressing the power-button
after connecting to charging cable -> bootloop syndrome
if I disconnected the battery and re-connected it, sometimes an empty battery-icon had been shown on the display in loop
it seemed the p8 couldn't detect the battery, because without charging cable the Huawei didnt work
How do you know thats the display? I remembered storing an other vodafone-branded p8 with cracked functional display, in a box - and I replaced it at last.
Other defects on the display? Nope, the display is optical ok, no freezes, no graphic fails, no crack.
I was also able to enter the fastboot&rescue-mode,
adb didnt work.
fastboot commands also (command is not allowed , because p8 is locked)
Sincerely
ooh, k, thats weird.
i replaced the vodafone branded mainboard with the one from the p8, where I thought the display caused the bootloop of os and battery icon.
and it worked.
but now.... i have the issue also with the display of the other smartphone.
so it is not the display alone.
but what kind of hardware issue could caused by a fall damage, when the display doesnt have optical defects,
and the charging does not work now..
now, i have the same issues like yesterday. thats weird. :/
doey anyone have some advice?
could a flash fix the issue? or is it something with transistors on the mainboard?.. thats weird.. :/
ok, in the moment I lay it down on the ground the handy turns off instantly.
and now i have the same issues with the other one^^ wtf².
i hope it is the battery. but i dont know.... thats so unreal..^^
ok, it seems it was the battery.
and the fall damage relates the battery and the mainboard.
Because I purchased a new battery on Ebay and the vodafone-branded mainboard detects the new battery.
the main mainboard without not (but heres also a difference to the old behavior after connected to the charging-cable (the accu-sign still blinks after connecting it to the charging cable, but the boot won't work. I tried it the huawei sign will be displayed. and then it turns off and the accu sign will be displayed again)
anotherbootloop-solution said:
ok, it seems it was the battery - and the mainboard.
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Click to collapse
anotherbootloop-solution said:
and the fall caused the battery- and the mainboard damage.
Because I purchased a new battery on Ebay and the vodafone-branded mainboard detects the new battery, when I use the new battery, with the old mainboard and the display (which felt on the oven door)
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Click to collapse
anotherbootloop-solution said:
the main mainboard without detects it not (but here's also a difference to the old behavior after connecting to the charging-cable (the accu-sign still flashes after connecting it to the charging cable, but the boot won't work. I tried it. the huawei sign will be displayed. and then it turns off and the accu sign will be displayed again)
Click to expand...
Click to collapse
Am I a coder now? XD
Hello.
For maybe the 5th time I just took apart my old 3a that my son's been using. I was going to replace the battery, but turned out the battery I'd ordered (OEM and fresh from the wrapper) was bad (puffing up). Needless to say, I didn't replace the battery just now. The old one was managing ok, so definitely wasn't dead. I removed it carefully, so figured I could just reinstall it until I got a better one.
Having put the phone all back together (unfortunately, breaking the cable for the fingerprint sensor along the way, but AFAIK, that would have nothing to do with my problem), I found the phone was bootlooping. Not just that, but once I took it back apart, I found that as soon as I plugged in the battery to the motherboard, it started to boot. Holding any combination of buttons didn't stop the bootlooping. I'm just seeing the start screen (it's rooted) and maybe a flash of the Google logo, then back again. I can't turn it off without unplugging the battery.
So now I don't know what to do with the thing. I thought I'd just put it back together and let it limp along for a while, but suddenly it's hosed. Has anyone else experienced this kind of behavior and found any fix?
Thanks
JimDandy68 said:
Hello.
(…) as soon as I plugged in the battery to the motherboard, it started to boot. Holding any combination of buttons didn't stop the bootlooping. I'm just seeing the start screen (it's rooted) and maybe a flash of the Google logo, then back again. I can't turn it off without unplugging the battery. (…)
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Click to collapse
Never took my Pixel 3a apart, but first thing I'd check would be power button - it might be stuck (always pressed), might be "shorted".
Tamsta_T said:
Never took my Pixel 3a apart, but first thing I'd check would be power button - it might be stuck (always pressed), might be "shorted".
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Thanks, @Tamsta_T
I didn't want to complicate the story, but I did also replace the entire power switch. No matter, it does the same thing with the old power switch, the new power switch, everything connected to the motherboard, or nothing connected at all except the battery. Also, whether or not it's plugged in. IIRC, the battery had over 60% charge when I started this morning, and it's been keeping the phone going for a whole day. I feel like something must be up with the motherboard itself, but don't really know.
Could the touch sensor being broken actually cause this problem? That's the only thing that's different. I don't even know how that cable got broken, as I tried to carefully remove it from the motherboard. But it's done, and to test that theory, I'd have to buy another.
JimDandy68 said:
Could the touch sensor being broken actually cause this problem? That's the only thing that's different. I don't even know how that cable got broken, as I tried to carefully remove it from the motherboard. But it's done, and to test that theory, I'd have to buy another.
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Click to collapse
JimDandy68 said:
I didn't want to complicate the story, but I did also replace the entire power switch.
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Click to collapse
how is power switch connected to the motherboard? Is that connection 100% intact nor damaged? By the way, if fingerprint cable is broken, maybe that connector is damaged too and is causing short circuit?
And can you enter fastboot or recovery mode?
Sorry, this might have gotten buried in my last reply:
it does the same thing with the old power switch, the new power switch, everything connected to the motherboard, or nothing connected at all except the battery
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I don't have the broken fingerprint sensor cable attached at all. Tried it once, but figured that was pointless if not counter-productive.
I've also cleaned all the accessory contacts, including the one for the power switch, using 91% isopropyl. The only thing I haven't done, and the last thing I can think to try, is to really hit the motherboard with compressed air, especially the contact for the power/volume switches. I just know it worked fine after taking it apart multiple times, before this last time.
If it's not some damage to or debris in the power-switch connector, at this point I'm thinking the motherboard's gone bad in some other way.
Asked over in iFixIt, and was informed that it may well be that not having the fingerprint sensor attached could cause POST to fail, so I'm going to try a new one and see if that helps.
JimDandy68 said:
Asked over in iFixIt, and was informed that it may well be that not having the fingerprint sensor attached could cause POST to fail, so I'm going to try a new one and see if that helps.
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Click to collapse
New fingerprint sensor, per this recommendation. Phone still endlessly bootloops. Seems to be permanently powered on, cannot stay in bootloader/fastboot mode for more than about 2 seconds. The buttons all register -- e.g., if I hold down all 3, the phone goes black, but only until I release them. There seems to be no way to intervene in the problem. I think I may have to give up on this, unless anyone has further suggestions (beyond a new motherboard, since I've already invested too much time and money in it).