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Sony Xperia Z4 (known as Sony Xperia Z3+ in Europe). Smartphone with 5.20-inch 1080x1920 display powered by 1.5GHz processor alongside 3GB RAM and 20.7-megapixel rear camera. It was released in 2014.

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lcd screen black after replaced it

I replaced the screen on my z3+ a few days ago,but after reassembly the screen doesn't power on. The vibrator is good, the notification led blinks after several minutes as I'm still getting notifications but no picture or sound. All connectors are well connected,what's wrong with it?

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Defiantly try a dark room and touch on the screen

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You most likely have a faulty screen.

Try holding down the power and volume up buttons together. Wait until you feel it vibrate 3 times, keep holding for another 5 seconds or so.

Also check the cable whick the LCD plugs onto... make sure something hasn't been damaged.

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Same problem can't find fuse diagram any where for this model every other but z3+ :(

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Getting mixed messages about a fuse or a chip, I found a company and sent them an email they seamed pretty legit test each fuse replace any that need it ect was roughly 40£ but cant I find it again !!!!! NO

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PS it's definitely on my board not a ribbon or screen

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Shine a light on your screen and look very carefully, see if it powering up it could just be the backlight fuse has blown.

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In Sony Xperia Z4 Manual following steps are written to troubleshoot screen problem.

  • Remove the back cover of your android device and reset the battery to make sure that the contacts are touching properly, and the phone is getting power. Then charge your phone and leave it for charging for few hours.
  • If the first step fails to solve Android Black Screen Of Death issue, then take out the sim card, SD-card and battery from the phone and leave them for 5-10 seconds. Put the battery and charge it.
  • If the previous step also fails, the hardware factory reset will be the last step to perform. This process will erase all the data on your android phone, but you will not be able to backup them because of the Android Black Screen Of Death. Make your phone ready for hardware factory reset by resetting the battery and taking the SD care out. You can keep the sim card in your device and close the phone.
  • Now put the phone into charge to avoid any distraction in the factory reset process.
  • Press and hold the Volume up, Power and Home keys to boot the phone in recovery mode. In the recovery mode, select Factory reset/ Wipe data using volume keys. Press Power key to start the hardware factory reset.

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Kaye zal eeuwig dankbaar zijn.
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