These blinks (flashes) are fault indication. By the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit stage inside the TV. Count the blinks occur at one time switch ON, carefully. Do it once again, and make sure about the number of blinks. If the flashes are continious, non-stop, the main system control IC should be suspected. If you wish to get more details, check the site linked here. It has blinking codes detail to many brand TVs. Pull up older posts. http://electronicshelponline.blogspot.com/ Check the site in 'Mosaic' view. It will make search easy.
SOURCE: Blinking Red Standby Light - No picture
The six blinks indicates that an internal fan is either bad ot blocked by dust or debris, You should be able to look in the back of the unit and see some cooling fans. Chances are one on them is not turning and will need to be replaced
SOURCE: Panny TH-42PZ80U Plasma TV No display on Power-up
I had this same exact issue. Panasonic sent a repair tech to my house since I was still under warranty. The tech was able to fix me up in about 10 minutes. He replaced the "brain" or A-board and now I'm back in business. This is NOT a power supply issue. The brain is the circuit board that has all the inputs attached to it (component, hdmi, etc...).
hope this helps!
Testimonial: "thanx, had a suspicion it wasnt P/S"
SOURCE: Panasonic TH-50PZ80U plasma wont turn on
YOU MUST BRING THIS TV TO A REPAIR CENTER EXPECT AT LEASE 450,00 AND MAYBE MUCH MORE THERE MAIN PROBLEME IS SC BOARD AND OFTEN SD SU AND WORSE PANEL !!
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