I hav a panasonic 52 inch plasma model tx47p950a that isnt showing a blue screen when its turned on. The blue light on the front comes on then switches off the red light indicating that the tvs on continually blinks 3 times

SOURCE: Panasonic 50 inch Plasma

it could have over heated you can try to reset it first unplug it for about five minutes and try to turn it on if that dont work the remote might have a set button try holding that down until the red light flashes twice, then turn it on if not then hold the power button down on the set for a good five seconds to see if that resets it. if none of that works you will have to go to panasonic .com for the reset instructions.with the red light blinking the power supply is most likely good you just need to reset i.

SOURCE: 50 inch Plasma panasonic TH-50PZ80U.

if you have a warranty let them check it out before opening the panels, it may void it.... may be an internal power short.

SOURCE: Panasonic Viera TH-42PV7HS Plasma does not turn

replaced su or sd board and check sc board

SOURCE: panasonic th-50pc77u red light blinks 8 times in cycle

Ur power board it dead,need it replaced.

SOURCE: plasma 50 inches dont turn on

The power supply board is dead.Tries the websites like Shopjimmy.com,Ebay.com to buy the refurbish power supply board for the replacement.