Apple TV (3rd generation) doesen't start

Hello!

My Apple TV (3rd generation) doesen't start. I'm not sure when this happend, but it was a couple of months ago.

The light on the front of the Apple TV doesen't light up.

What I've tried:

- Using different power cords.

- Connecting Apple TV to iTunes, the Apple TV doesn't show up. I have tried different Micro USB cables and power cords.

- Replacing the battery in the Apple TV Remote.

- Trying another Apple TV Remote.

Sorry for my english.