I have a Panasonic 50 inch Plasma HDTV model # TC50PS14 and when I turn it on the red light blinks and the tv want come on

I have come across 6 blinks; 7 blink and even 10 blinks.
the video below may throw some light. Not sure if the blink codes are universal across models. Panasonic plasma tv 7 red blinks of *****

1. Hold the front panel power button for over 15~20 sec and try.

2. See the youtube video
https://www.youtube.com/watch?v=awnrE3k_G2M

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How many blinks you get, Panasonic has a diagnostic blink code to help with troubleshooting, it might indicate an issue with the internal supply, SC cards or main A module.

check the connections. if the ribbon cables are seated correctly, this will cause picture issues.

This link helps to diagnose

I have a 10 blinks and 12 blinks for that set, 10 says it possible SC board, and 12 says

Unplug the TV and disconnect connector A11 from the A board. Plug in the TV and press the power switch

Does the TV power up and

stay on?

No

Yes

If the speakers wires

are not pinched,

Replace

the speaker

Replace
the A board

try to check power supply look for swollen capacitor it is the common trouble of plasma and lcd.

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

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.