Samsung Galaxy S7 dead,black screen

[maryus1998]

Hi all I have a problem with S7 galaxy phone, I was suddenly closed, I tried volume down and power, but nothing, so has that please help me.
Thank you very much!

 

[B. Diddy]

Welcome to Android Central! What happens when you charge the phone -- do any lights come on?

Try pressing and holding Power and Vol Down for about 15 seconds. Then wait a few seconds, and then press and hold Power for another 10 seconds. Anything? If not, then the battery might have failed, or perhaps something worse (like the motherboard). Is the phone still under warranty?

 

[maryus1998]

No longer in warranty.
I tried what you said, but nothing can be burned motherboard?

 

[B. Diddy]

That's difficult to tell unless you bring it to a repair shop. It could just be the battery, but you'd still need someone to open the phone and replace it.

 

[maryus1998]

I have to go to a service, thank you for guidance.