[Q] Black screen of death ? Any survivors ? topic

Hello all,

I own a Z3 Compact since now 4 months, I bought it abroad, in Qatar and went back to Belgium after.
Overall, I'm very happy of it. Nothing to say.

Yesterday, the phone was almost full in battery, connected in bluetooth in the car... I tried to pick it up and turn it on, it wasn't working anymore. The screen stay black. I tried to turn it off, then on, impossible.
I tried to push the vol up and down then power button all together during 30 sec, nothing worked.
I tried to press the yellow button near the sim card, nothing helped.
I also tried to do all those combinations with the power plug connected, but even the power led is not showing up !
The phone seems to be turned off and I'm unable to turn it on again. I've read some forums and it looks like it's a common problems with Sony Xperia phones (ex: Link).

I'm wondering if I should return the phone to Sony for warranty ?
If yes, do you think it will work even if the phone hasn't been bought in Belgium ?

Thanks