How can I fix my Sony Xperia SP that has a black screen?

[yesmanko]

SONY XPERIA SP WHITE black screen

My phone went on black screen, i do not why. i can not turn it on. I can not even start rebooting. I tried to restart it by touching the button under the backcover, also i touched power and volume buttons at the same time. Could you help me please?

 

[B. Diddy]

Re: SONY XPERIA SP WHITE black screen

Welcome to Android Central! It could be a dead battery, a dead screen, or a dead motherboard.

Try plugging it into a wall outlet for 10-12 hours undisturbed, then unplug it and try to power on. Do you feel a vibration or hear any tones? If so, then the screen failed, and you can try to get it replaced at a repair shop. If absolutely nothing happens, then it's either a dead battery or a dead motherboard. Either way, you'd still have to bring it to a repair shop.