xperia s won't start

[dieter1]

Hi, I have a xperia s that doesn't boot.

If i press the power button the green led flashes 1 time nothing else.

I can connect to flashmode and boot mode.

emma recognizes the phone so I don't think the mainboard is broken and I can update the firmware through update service.

But I cannot boot the phone, any suggestions what I can try ?

[_alexdon_]

Try force restart(power button+volume up until the phone vibrates one time) or force shut down(power button+volume up until the phone vibrates three times).Connect to wall charger,turn on the phone normally and let it charge for 1 hour.

[FcoBA]

hello I have the same problem but my phone does not start, keeps the SONY logo permanently on, any help?

[_alexdon_]

Try the things I said in my upper post.

[dieter1]

Tried it but it doesn't do anything.

if i press the power button and the green led lights up, the phone become warm after a while (not hot, just warm) so i think it is doing something.

I tried to flash other firmware but with the same result.

[_alexdon_]

Take the phone to a sony center for further investigation.