black screen

[cezarmed2]

Hi!

My screen on the xperia e3 blacks out 2-3 times a day for 2-3 minutes and after that comes back to normal.

The screen gets black and if i press where the buttons for home/back were,the phone makes it feedback noise.

whats the problem?

[_alexdon_]

Can you check if the same occurs in safe mode?

http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008

[cezarmed2]

ok,i will run it one day in safe mode to see if happens again

[Phy]

After words you can try and repair your phone with Sony PC Companion.

http://support.sonymobile.com/us/tools/pc-companion/

[_alexdon_]

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@Phy wrote:
After words you can try and repair your phone with Sony PC Companion.

http://support.sonymobile.com/us/tools/pc-companion/

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The process will erase all internal memory.You might need to charge your device for about 1-2 hours before so the device has at least 60% battery.

Make sure the device is not connected to computer or laptop and turned off (sometimes you have to press power button and volume up until the device vibrates 3 times or on some devices you have to press the small button near the SIM tray or on the back of the device).

Open PC companion->support zone->phone/tablet software update->repair my phone/tablet blue highlighted.Follow the steps given,do not connect your phone until prompted to press volume down while plugging USB cable. If PC companion does not start the repair process, you might need to run it in compatibility mode with Windows 7 (in some cases XP).

[cezarmed2]

how would this process affect my warranty?

[_alexdon_]

It will not affect the warranty,PCC is an official tool from Sony.

[cezarmed2]

Can anything go wrong? can i restore from backup?

[_alexdon_]

If you follow the steps exactly,it won't go wrong. Yes,you should be able to restore.

[cezarmed2]

ok

so can you guide me step by step exactly?