I have a panasonic Viera th-50px50u the picture has gone out one day, when i turn the tv on the fans in the rear start
Fix Panasonic TV Not Turning ON Red Light Blinking - How To Finders
Timer lamp blinks.
SOLVED: blinking 4 times and won't turn on - Panasonic Viera - iFixit
Panasonic LCD TV 4 Time Blink Problem Full Repairing Technique - Dip Electronics LAB
Alpengeist's TV (and other stuff) Repair Blog: Panasonic TNPA5330 SN board 7 or 6 blinks - detailed fault analysis and repair guide (TX-P42GT30, VT30, ST30)