Xperia Z U problem, Bricked??

[Roel123]

I have buyed a Xperia Z Ultra. One day I let the battery drain, (you know) 1%, then shutdown. Very normal.
I place it on the charger and I go away from it. A few hours later I come back and there's no red or green light anymore. It won't boot either. And when I waite a min. and put it on the charger again, there's a red light that burn for 5 seconds, and it's gone. Every time again.
When I put it on my computer, he see the device. But Sony PC Companion don't see it. I can't get into flashmode or fastbootmode...
My friend have buyed a new battery, but also this don't work.
What can I do?

[_alexdon_]

You did not have to let it discharge completely,you should have connected to charger when it is between 1-10%.Try force restart(power button+vol up until the phone vibrates).

[Roel123]

Oh, it don't vibrate

[_alexdon_]

So if you keep it charging for 1-2 hours,after that you try a repair with sony update service,how does it react?

[Roel123]

Ok, I'll give it a try... I let you know when I've tried it about 2 hours. Thx btw

[_alexdon_]

Waiting for your feedback.

[Roel123]

Ok, I am pushing the button vol down + usb cable. And it's not working...

[_alexdon_ · Accepted solution]

Take your phone into service.

[Roel123]

I have send an e-mail to sony, and waiting... What else can I do?

[akhilalfonsk]

Give it to service center. They will replace your device. It seems like after 4.3 update we XZU is also getting same issues as XZ, ie device go dead suddenly.