Is my iPod Touch dead?

Well, my iPod Touch 5 seems dead to me... hopefully someone can help me ??

- It doesn't charge with any cable I tried, with my iMac or charger.

- Itunes doesn't see the iPod when I connect with a cable, or via WiFi

- No WiFi available : WiFi button is grey

- No Way to boot on DFU Mode, after the Apple logo, screen remains black... (when the battery wasn't empty)

- Now the battery is empty, so there is nothing more that I can do :(

This iPod is only 20 months old...

Don't know if I can change a componant, I'm afraid the motherboard is in cause.