Phone screen not turning on! - OnePlus 6T Questions & Answers

so I was restarting my phone to do recovery back up. but now the screen doesnt come on, i can plug in the device and device manager detects it being plugged in. Does anyone know a solution to this?

chompa1422 said:
so I was restarting my phone to do recovery back up. but now the screen doesnt come on, i can plug in the device and device manager detects it being plugged in. Does anyone know a solution to this?
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When exactly did it go black? During the reboot to recovery or after you left recovery?
Have you tried Voulme Up + Power for about 15 to 30 seconds to do a full power down then boot up?
What have you done?

Related

totaly dead? :(

My phone is totaly dead I think, tried to flash another rom on it. Got an error, and everything did weird.
Resetted the phone, but nothing happens. Removed battery, sim-card.. tried to put it back on.. completely dead.
When turning on the phone nothing happens, not a single light burns or flashes, and nothing happens on the screen.
Did i totaly mess my phone up?
Allso when i plug my phone in my charger no light burns (normaly an orange light would burn)
try booting in bootloader
cookiemonster55 said:
try booting in bootloader
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Well it wont turn on, so how can i boot it in bootloader? When i press the on button, nothing happens? Not a light, nothing on the screen, just black.
After turning on try to do hardreset.
zpaz said:
Well it wont turn on, so how can i boot it in bootloader? When i press the on button, nothing happens? Not a light, nothing on the screen, just black.
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If I could turn on I would have tried that, but the device wont turn on.
Sometimes it seems that your device is turned off but actually it is turned on but can't boot, for exmaple after the flashing failure.
In this case try to enter bootloader mode. When my Herald was broken I was able to enter bootloader mode although my device also seemed to be turned off.
When your screen is black you don't know if you are "on" or "off" so please try to enter bootloader mode two times after switching your device on and before that.
zpaz said:
If I could turn on I would have tried that, but the device wont turn on.
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Kindle Fire Yellow Triangle bootloop.

I am stuck at the yellow triangle. It keeps rebooting and it wont let me connect it to the computer. I need help!!!
cashman2419 said:
I am stuck at the yellow triangle. It keeps rebooting and it wont let me connect it to the computer. I need help!!!
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Boot into TWRP... then follow my other directions.
From the op of KFU thread:
Known Tricks
•If you end up stuck at the yellow triangle, in KF Utility select Boot Normal, wait for it to say <waiting for device> and then press and hold the power button 20 seconds until the fire turns off, then when its off turn it back on. This sometimes happens, I have yet to find a clean solution
•If you end up stuck with a yellow triangle, do not EVER unplug it. Leave it plugged in. Check the windows drivers to make sure it isnt showing as "kindle" again. Fastboot is different and can cause this.
That fixed my issues in fastboot when I was trying to install TWRP the first time. If that doesn't work then [URL="http://forum.xda-developers.com/showpost.php?p=20945694&postcount=506]check out this post[/URL]
I cannot boot into TWRP because the kindle keeps shutting off because it is dead. It isn't read by the computer.
Plug it into electrical outlet and leave it alone for three hours.
While waitin for three hours assess your problem and find the solution. Search.
Then execute solution after fire is charged.
Will it charge even when it keeps turning on and off?
cashman2419 said:
Will it charge even when it keeps turning on and off?
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Yes it will keep charging.
It did not charge... At least I don't think it did..
When you plug it in do you get a solid color or is the light flashing?
When it's plugged in to the wall and the light is solid you should perform a hard reset by holding power for 20 seconds. This will fully shut down your KF and it will accept the charge
If by flashing you mean turning on and off by itself than yes, it is flashing.
Please help..I'm losing it
Same problem here. It does not seem to charge when plugged into either wall or computer. The green light flashes on and off repeatedly and the recovery screen (yellow triangle) just comes on and off (it eventually just goes black while the green power light continues to turn on and off)
in order to help myself I have done a few things
1: KFU isnt working.
I updated the drivers through KFU
I tried to change bootmode to "normal" and it hung on "waiting for device" I tried hard reset here and nada
2: I tried booting into normal fastboot 4000 through command prompt and hung on "waiting for device" tried reset..nada
So just like the poster above I cannot get into TWRP as the computer never truly recognizes the KF. This all happened when my wife turned on my kf and didnt know what the TWRP was and hit the power button for recovery. It loaded back to the stock kindle set (I had been using CM7) and since then I've been eating FUBAR soup as it doesnt work
Seriously..im pulling my hair out here...any help? I'd try to return the kf to Amazon and save myself the pain but I think we know what would happen when they plug it in and see the flashing triangle...lol
1. Plug your kindle in to the wall for 3 hours like someone mentioned previously (it will charge) The issue with the device being in a boot loop has nothing to do with the kindle fire not charging, this is perfectly normal if you have modified system files and the system can't boot the Android OS. It is also normal to never get past the Yellow Triangle if for some reason that you have changed to FastBoot mode. (Some people may be misinformed thinking that FastBoot does what it sounds like it does (boot fast - not the case), that's how this usually happens)
2. After you know the kindle has been charged for at least 3 hours on a known working power outlet. Press and hold the power button on the kindle for 20 seconds or longer until the device powers down completely.
3. Press the Power button to turn the kindle fire back on, and be ready, as it comes back on press the power button as soon as the Yellow Triangle (firefirefire) logo first appears. Press it up to 5 times rapidly. If you get to TWRP then you can relax. - If you get to the Yellow Triangle and you have pressed the Power button a few times but it is still stuck in a boot loop before giving up try one more time to shut down completely and reboot while pressing Power button rapidly.. You want to be sure to do this before the Yellow Triangle screen goes dim .
4. When you are in TWRP you should be able to use KFU or ADB. You may want to change the boot mode if it is not already to "Normal" if you are having this problem with "Normal" then try to reflash the Kindle with a recovery image or a new ROM.
Hopefully you can at least get to TWRP by following this, so that you can at least flash the kindle with a different update.zip. Good Luck
Charged like you said...still no charge. Flashes on and off and when you pull the power cord goes to black like its dead and will not turn on at all whether you hold it down or just push it...
Never had a problem like this before, could always at least get it to turn on or off not a mix of both lol. Thanks for the help...any more ideas on how to get it where I can at least get it into recovery?
MattFoley said:
Charged like you said...still no charge. Flashes on and off and when you pull the power cord goes to black like its dead and will not turn on at all whether you hold it down or just push it...
Never had a problem like this before, could always at least get it to turn on or off not a mix of both lol. Thanks for the help...any more ideas on how to get it where I can at least get it into recovery?
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I'm experiencing the same thing.
I'm still confused... are you guys trying to charge it while it is in the boot loop?
Have you tried turning it off (holding down the power button for 20-30 seconds until the screen and the power button go dark and stay dark)? And then plugging it in? I wouldn't expect you to see the firefirefire triangle if the device is off while charging.
The other thing that you might want to look into is the factory cable. Supposedly charges the device and can access it w/o any battery power at all - if I understand that thread correctly.
The point is you can't turn it off, it's dead. If you try to put it on charger either through wall charger or USB, it blinks on and off repeatedly and the power button does nothing at all. The computer won't recognize (tried several diff ports and pcs)
I'm beginning to think the factory cable is my only option to bypass the bootloop and fix it, just hoping I wouldn't have to wait so long for a cable or drop 40 bucks on it. I guess that's what I get for messing something up!
I left it bootlooping for like 6 hours on the charger. Unplug it and you can't turn it on. Plug it in and it bootloops and you can't turn it off. So is this just bricked for good with no possible fix?
MattFoley said:
The point is you can't turn it off, it's dead. If you try to put it on charger either through wall charger or USB, it blinks on and off repeatedly and the power button does nothing at all.
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Sorry. I was obviously hoping I was misinterpreting.
MattFoley said:
I'm beginning to think the factory cable is my only option to bypass the bootloop and fix it, just hoping I wouldn't have to wait so long for a cable or drop 40 bucks on it. I guess that's what I get for messing something up!
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You may want to PM SkOrPn, http://forum.xda-developers.com/showpost.php?p=23024666&postcount=108, seems like he has them for $15/$19 depending on length (if your location is accurate.)
Kindle fire turning on and off by itself and won't charge
The only way I know around that problem is unfortunately to remove the back cover and remove the battery with a good adjustable power supply apply 3.7V to the battery for a 30 to 60sec it will draw approx. 3.4A and over the 30 - 60sec the current draw by the battery will drop. Be very careful as you don’t want to blow it up. Put the battery back in and you should find the kindle will charge again. Good luck
Hmmm, I wonder if the factory cable would be an alternative as last I checked an adjustable power supply (if you're without one) can run 70-100 bucks which is half of the kindle itself, I'd almost just take my chances sending it back in to amazon. Thanks for the help though from someone who has had the problem

HARD BRICK... pls help me!

hi. well, i expected this and im doomed.... i had my phone in the fastboot mode and i tried everything i could. i tried the solution and now what happened is the phone is dead.
what happens now is well nothing. it does not power on, it does not go to download mode, it does not go to recovery, it does not even go to the fastboot mode.
when i connect to pc, via usb cable, only thing that comes on my pc is multiple like 10 new drives and it asks me to format them before use. the screen turns on but only show black color. it does not even show LG logo. only black color. when i remove usb and press and hold power button phone turns off. its not even charging.
can any one tell me any solution to this?
See in general there is a thread. If you see multiple partitions then its still fixable. See the thread from no download mode etc as title
Sent from my LG-D802 using Tapatalk
Make sure the phone is turned off. I had the same issue. Press power button for 15 seconds or so. Then press volume up,then connect to pc/laptop. It will enter dl mode.
aami.aami said:
hi. well, i expected this and im doomed.... i had my phone in the fastboot mode and i tried everything i could. i tried the solution and now what happened is the phone is dead.
what happens now is well nothing. it does not power on, it does not go to download mode, it does not go to recovery, it does not even go to the fastboot mode.
when i connect to pc, via usb cable, only thing that comes on my pc is multiple like 10 new drives and it asks me to format them before use. the screen turns on but only show black color. it does not even show LG logo. only black color. when i remove usb and press and hold power button phone turns off. its not even charging.
can any one tell me any solution to this?
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VERY easy use tool unbrick qualcomm 9006 of my
download all partitiont phone of you
and choose model in tool
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if very hard send id pass teamveiwer i can help you free.
kimitza said:
Make sure the phone is turned off. I had the same issue. Press power button for 15 seconds or so. Then press volume up,then connect to pc/laptop. It will enter dl mode.
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Agreed - I've also experienced this. The phone doesn't power down if you're still connected via USB, so make sure you've unplugged it, and then ensure that you're powered down by holding the power button for a while. Then, while holding down VolUp, connect the USB cable. You may need to try this a few times.

Samsung galaxy a20s wont boot

hi everyone hoping u can help have a Samsung galaxy a20s that wont boot i can access it by holding down volume - and power after a few minutes it will turn on but wont boot into recovery instead it boots normal and wont charge once turned on it completely shuts down again, also if plugged instead of charging it vibrates and looks like the display wants to turn on but instead it turns off and once again vibrates and display flashes what looks like to be the back-light sorry or not being specific can someone help
Ok
death1426 said:
hi everyone hoping u can help have a Samsung galaxy a20s that wont boot i can access it by holding down volume - and power after a few minutes it will turn on but wont boot into recovery instead it boots normal and wont charge once turned on it completely shuts down again, also if plugged instead of charging it vibrates and looks like the display wants to turn on but instead it turns off and once again vibrates and display flashes what looks like to be the back-light sorry or not being specific can someone help
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Connect to computer and hold down both volume keys
If that brings you to the download mode you can reinstall all your firmware using odin
physwizz said:
Ok
Connect to computer and hold down both volume keys
If that brings you to the download mode you can reinstall all your firmware using odin
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i have the a207m and unfortunately it did not work thanks anyway
so i could actually see it turn on and got the unlock screen and saw that battery was dead and did not have a charging symbol it turned off 2 seconds later. can it be the baterry that causes this?
It can be the battery but it could be a dirty charge port or even cable. When the battery is extremely low you're not going to be able to flash it, nor should you try. See if you can get anything out of the charger connect area on the phone.... maybe it's lint.. At this point there isn't much else besides ensuring you have a clean connection.
mindlery said:
It can be the battery but it could be a dirty charge port or even cable. When the battery is extremely low you're not going to be able to flash it, nor should you try. See if you can get anything out of the charger connect area on the phone.... maybe it's lint.. At this point there isn't much else besides ensuring you have a clean connection.
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i have actually checked it and it did seem dirty cleaned it and nothing changed however i did do the same as before and for some odd reason when i tried to power it on it booted for a split second turned back off and booted into recovery formatted the phone tried to see if any error popped up but nothing happend it formatted correctly and booted again like nothing yet it still didnt charge and i still have the same problem
death1426 said:
i have actually checked it and it did seem dirty cleaned it and nothing changed however i did do the same as before and for some odd reason when i tried to power it on it booted for a split second turned back off and booted into recovery formatted the phone tried to see if any error popped up but nothing happend it formatted correctly and booted again like nothing yet it still didnt charge and i still have the same problem
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https://forum.xda-developers.com/galaxy-a20/how-to/crash-recovery-t4068369

PH-1 requires long press PWR button to boot - Any ideas why?

Hello,
I just purchased a used PH-1 and it was reset before I got it. So I put in my Google credentials and restored a backup no problem. The first few times I powered the phone down and plugged in a charger, I saw the battery charging graphic icon (looks like a coffee to go cup : ), no problem. But now, when I power down the phone, the screen is black and stays black with no sound or vibration when I plug in the charger. It still *does* charge in this state, but when I try and boot the phone back up, I have to press the Power button for 10+ seconds and let go before it will boot. I suppose I can continue to use the phone this way, but I was wondering if there was a reason and/or fix for this that anyone is aware of? thanks so much.
ohcello said:
Hello,
I just purchased a used PH-1 and it was reset before I got it. So I put in my Google credentials and restored a backup no problem. The first few times I powered the phone down and plugged in a charger, I saw the battery charging graphic icon (looks like a coffee to go cup : ), no problem. But now, when I power down the phone, the screen is black and stays black with no sound or vibration when I plug in the charger. It still *does* charge in this state, but when I try and boot the phone back up, I have to press the Power button for 10+ seconds and let go before it will boot. I suppose I can continue to use the phone this way, but I was wondering if there was a reason and/or fix for this that anyone is aware of? thanks so much.
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Try a different cable and wall charger
sd_shadow said:
Try a different cable and wall charger
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Sorry I should have mentioned, I tried several cables and chargers... same result.
Another issue I noticed. If I turn on the phone when it's plugged in, it goes to the bootloader (which is locked). I have to unplug the phone if I want to boot to the OS.
ohcello said:
Another issue I noticed. If I turn on the phone when it's plugged in, it goes to the bootloader (which is locked). I have to unplug the phone if I want to boot to the OS.
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Make sure you're not fat-fingering the volume down button and the power button, because that combination is guaranteed to get you into the bootloader.
Smac89 said:
Make sure you're not fat-fingering the volume down button and the power button, because that combination is guaranteed to get you into the bootloader.
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Understood and no I'm not. It only happens when plugged in

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