Yesterday my Z2 suddenly stopped working on an almost full charge. I have tried charging it in various ways, to no effect. I then went to a repair shop where they opened the phone, disconnected and reconnected the battery, which did nothing. They then tried a new battery which also did nothing.
EDIT: I read a post for an identical problem but on an Xperia T which was solved by using Update Service because PC Companion didn't work - however, because Update Service is discontinued I cannot use that fix, it just gives an error message and closes.
Right now the status of the phone is:
Unplugged:
- Completely unresponsive.
- All combinations of button presses have no effect.
Plugged into wall charger:
- LED flashes bright red, then turns off, then dull red for a slightly longer time while the screen flashes the white Sony and Xperia logos. Then it repeats.
- Holding the power button causes a single vibration after a while, but no other effect.
- All other buttons and combinations have no effect.
- Can't enter flashmode or fastboot mode.
Plugged into PC via USB:
- LED flashes red, green, red (no gaps), then a pause, and red, green, red again.
- Pressing volume up will take it to fastboot mode (solid blue light).
- Volume up + power has no effect.
- Volume down has no effect.
- Pushing red off button next to USB also does nothing.
- The PC makes the USB connect sound and then the disconnect sound very soon after, repeatedly, unless the phone is in fastboot mode.
While I can access the phone in fastboot mode, it is not able to connect in Flashmode so that it can be repaired by Xperia Companion.
Any advice would be appreciated.
