Question OnePlus 9 Pro doesnt charge nor turn on. - OnePlus 9 Pro

So my phone showed charging, but percentage stayed the same, when I tried to reboot device, it turned off and doesn't turn on. Now phone doesn't react to charging at all, doesn't appear when connected to pc and doesnt turn on,just black screen. That's the second time this happend, first time it magically turned on after some time, is there way to fix it and turn on the device?

When you say "black screen", is there backlight?

viktak said:
When you say "black screen", is there backlight?
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Click to collapse
no, black screen as device turned off completely, no backlight,nothing

In that case, I would try replacing the battery first.

Are you sure the charger is good?
I'd try using a different charger.
And a different cable.
Leave it plugged in for an hour.
Then, press and hold the Volume Up and Power buttons for about 25 seconds. This would force a shutdown if it were booted up but you couldn't see anything.
Wait about 30 seconds. Then, press and hold the power button until you feel the power-on vibration. Should only take 5-10 seconds.

Related

HOX not charging and turning on

Phone was like about 1%, I just wanted to see what time is it and connect it to the charger, but it discharged.
After connecting it to the charger, everything was ok, HOX started, but I wanted to check something, and it turned off.
I turned it on again, but it crashed after entering PIN, and I had to turn it off by pressing longer power button.
And from that time it doesn't charge nor run. Back of the phone is cold, the LED don't lit.
I tried many combinations of pressing power button and volume and with plug-in USB.
And I've "charged" it for about 1h and HOX didn't turn on.
Help me guys
//sorry for language

Phone not turning on.

Hi. So after a long wait I got my Zenfone 2 ZE551ML today. The first thing I did was turning it on and it turned on normally, then I proceeded to make the initial setup (logging into google account, etc) without any problems. Then after about 10 minutes of use the phone suddenly turned off with the battery being at around 35% and didn't want to turn on again. I read that old firmware (like the one that comes default with the phone) had battery display errors so I thought the phone had run out of battery, so I charged it for 8 full hours and I unplugged it now. To my surprise the phone is not turning on either. The only way I can make the screen show something is by connecting it to the charger, it vibrates and displays a white battery icon, eventually changing to fully green (fully charged battery, the green led indicator also appears) only to disappear like 3 seconds after. Can't turn the phone on while charged and can't even make the phone show the battery icon again (unless I unplug and plug again, repeating the cycle). So, what can I do to turn it on?
Thanks in advance.
xzifi said:
Hi. So after a long wait I got my Zenfone 2 ZE551ML today. The first thing I did was turning it on and it turned on normally, then I proceeded to make the initial setup (logging into google account, etc) without any problems. Then after about 10 minutes of use the phone suddenly turned off with the battery being at around 35% and didn't want to turn on again. I read that old firmware (like the one that comes default with the phone) had battery display errors so I thought the phone had run out of battery, so I charged it for 8 full hours and I unplugged it now. To my surprise the phone is not turning on either. The only way I can make the screen show something is by connecting it to the charger, it vibrates and displays a white battery icon, eventually changing to fully green (fully charged battery, the green led indicator also appears) only to disappear like 3 seconds after. Can't turn the phone on while charged and can't even make the phone show the battery icon again (unless I unplug and plug again, repeating the cycle). So, what can I do to turn it on?
Thanks in advance.
Click to expand...
Click to collapse
I have a feeling that you did not hold the power button long enough. Disconnect the charger first, and wait for about 10 seconds. Then, hold the power button for at least 6 seconds. The phone should then vibrate and then you may release the power button. Other reasons why your phone may not seem to be turning on at all might be due to the back cover not being fully locked in, thus not making any contact with the power on the motherboard itself.
Do report back the results.
Rizzed said:
I have a feeling that you did not hold the power button long enough. Disconnect the charger first, and wait for about 10 seconds. Then, hold the power button for at least 6 seconds. The phone should then vibrate and then you may release the power button. Other reasons why your phone may not seem to be turning on at all might be due to the back cover not being fully locked in, thus not making any contact with the power on the motherboard itself.
Do report back the results.
Click to expand...
Click to collapse
I did. Doesn't work. I also removed the back cover and pressed the power button with nails with no results either. Personally I think there's something to do with the power button as it doesn't even responds while charging (pressing it should display the battery icon) and the only time I could use the phone it didn't work to wake up the phone or setting it to sleep, only double tapping worked. What is strange is that it worked the first time I turned on the phone though.
Are you able to get into FastBoot mode? If so please try performing a hardware reset including wipe cache partition. Please see the following:
http://www.asus.com/us/support/FAQ/1011956/
If you have any questions or concerns please feel free to contact me direct at [email protected]. Please include a link to this review when/if responding.
Sincerely,
Frank
ASUS_USA
I got that several times when connecting my phone to the PC. I removed the back plate and disconnected the battery, after reconnecting phone booted up.
Sent from my ASUS_Z008D using Tapatalk
I am facing same problem.my zf2 power button does not work and unfortunately my mobile switched off.now I m not able to switch on again.nothing happen when I press power button. Is there any other way to switch on ?please suggest me if u get solution

Phone seems to turn on, but screen completely dark.

Hi,
My S4 SGH-M919 is having a problem where it appears to turn on, charge, and boot to the OS, but there is no response from the screen. The bottom buttons illuminate but the screen doesn't want to turn on. I've tried removing the battery and holding the power button down for an X-number of seconds, but this doesn't seem to do the trick.
Any ideas?
Thanks.
With the phone powered off, connect the phone to the charger. If you see the charging animation, sounds to me like the screen may be damaged or the LCD/motherboard connector is loose.
Was the phone every dropped or bumped?

Htc 10 charging problem

Hi every one,
last night, when my phone was fully charged and the green notification was on, I unplugged it, but suddenly I saw that my phone didn't run. Therefore, I pressed and hold the power button, but unfortunately, my phone didn't turn on. I plugged it again to the charger and saw that an orange light was blinking, and the phone was showing an empty charge icon. I pressed the power button again while it was on charge, and it tried to turn on but after few seconds it turned off. I was really nervous and distressful as it was for the first time to me.
I let it to be charged for minutes, and, then, I tried to turn it on again. This time nothing happened. I also tried the volume +/- and power button to reboot it but they didn't work.
Now, when I unplugged and plugged it again, I can't see even that orange light.
Please, help me.

LG G4 not powering up

My G4 H811 suddenly not powering on.
It was just working fine. I turn off the screen and then a minute later I try to turn the screen on by pressing the power button and the screen is not turning on. I made a few attempts and tried to power it off and on. That's when I feel the phone vibrates but normally it is just a short vibration before the screen on but the vibration never stops and screen is not on. Pressing the power button does nothing. I have to take out the battery to make it stop (vibrates for about 30s). After that, phone won't even vibrate.
I left the phone charged for 2 hours. The charge indicator never turn on but I feel a little warm just like when phone is charging. Basically, now phone will not turn on. What can I do?
There were a couple of occasions since yesterday that I managed to power on the phone to see the LG logo. But it stays there for about 10s and the screen went blank. Looks like my phone is done for.

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