When i turn it on it turns off

SOURCE: Panasonic Viera 42" TH-42PV30

Check the 2 main interconnection cables (24pin and 26pin) rear of PDP and Tuner box. Make sure they are firmly connected. (Loose connection of 24pin will cause no power on symptom.)

SOURCE: Panasonic Viera TH-37PX8B Green Screen When Turn On DVD Player

I had the same problem, after reading the forums and playing around for a while I cracked it. It was to do with the output from the DVD player, in the DVD player setup I changed the output from RGB to s-video and bingo! Hope that helps

SOURCE: Panasonic Viera TH-42PZ80U Won't turn on

Make sure all of your connections for cable attenna or satelite are fully connected.

SOURCE: Panasonic Viera Closed Captions HELP

Just use he remote and push the cc button or the display button until cc off appears on the screen

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

replaced su or sd board and check sc board