Batboard

I am getting ready to send my HT-1550 in for repair and I am just wondering what could be the cause of the problem. The Display works fine until you change the channel and then the display goes blank. The only way the display comes back on is by pushing the button to turn the light off.

sounds like the flex not seated correctly or corroded. doubt if it's the replacement kit for around the power connectors but possible? what color is the rubber gasket around the power terminals, orange or blue?

Blue