I had a technician work on my TV and he was looking at the service menu and press the button for DMD and then he hit disable. Right after that the tv screen went blank, after fooling with it he said the main board went out. after replacing the board twice he keeps saying it the boards are bad.
All he was suppose to do was replce the light engine.
What did he do and how can I fix it. The screen starts up normally but I get a breif info screen in left hand corner that shows channel and things and then goes away afte a second or 2.