UE42F5500 hardware problem ? warranty ?

[panadol]

Hello
I have problem with my tv - i am think that can be something with usb ports - last times when i play movies from usb sometimes after couple minuts tv self restart and after that dont recognize my usb.
Now even when usb ist unplug when i turn on tv - it restart after 2minuts and starts again. When i try to turn smarthub and all media - it freeze and restart.
i try to reset tv from menu and service menu - that don't help
I thing that can be hardware problem ?
Tv is on warranty but abaut 1year ago i have rooted my tv(with skype widget). Do You think i can have problem with warranty ? Is there posibility to unroot ?
Sorry for my bad english

[juusso]

Yes. Remove SamyGo and give tv for warranty repair.

[panadol]

Thx. I have repaired tv on warranty but unfortunately with instaled new firmware 2102