Any possible troubleshooting suggestions or solutions?

[waterford]

Sharp Aquios model LC-60LE820UN was working then suddenly turned off while adjusting contrast and would not turn on again. Power light flashes but nothing else happens. Fails to come on anymore.

 

[COLGeek]

Disconnect the power cord from the wall. Press the power button (while power is disconnected), nothing should happen, but this will discharge any residual power in the system. Wait a couple minutes, then reconnect power and try again.