Samsung Plasma Ps42B450B1

[Bucksergio]

I have a problem with my plasma. It just gives me sound, chnages channels and can control volume, but I can not see anything on the screen. it satys as if it wasn't switched on.

I have searched for a service manual but could not find for Samsung Plasma PS42B450B1. Anyone to help?
I would like to have repair tips and electronic schematics to help me if ned be. Sould I change components??


Thanks,
Sergio