Audio is okay-blue screen will show on no input-audio can be heard but dark screen when any input has a signal. It is detected as 480 but no video,,,no raster on rf inputs Have electronics background can do volt and resistance checks
Televison & Video - Mitsubishi - WS-55807 TV
Answers & Comments
The problem is solved by expert electronic, because your tv have cpu program and need reconfiguration this program,
And other question is you check cable conexion
you check conexion
you check format/image programing (NTSC/PAL) if in the setup or menu have the best configuration, no all problem is the component electronic...
oh, you read manual step by step...
bye