Question about Panasonic TH-42PZ77U TV
Sounds like it started "Protection Mode" because of a failed electronic part inside the TV. When this happens, the TV will keep turning itself OFF or will not turn ON at all. This keeps the other part inside from being damaged. Most likely the TV has a power supply related problem. It's possible that it maybe a bad capacitor or transformer on the power supply board. The common part to go bad for flat panel screens circuit board that powers the screen. Most manufactures call it a Backlight Inverter Board.
But, I can't say it's 100% the problem because I can't actually look at the tv over the internet. I can only make guesses with the symptoms.
You have a few choices:
1. You can again try leaving the TV unplugged for 30 - 45 minutes so the TV can discharge and reset itself.
2. If by chance the TV is still under warranty, go that route.
3. If you have some electronic experience, if you can find and purchase a Service Manual over the internet; It will help you diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you red light blinking codes, circuit diagrams, schematics, test points, and part# lists.Usually, cost under $20. And most cases the new part cost less than $15 by searching on the internet with the part number.
4. Pay a TV shop to do the repairs. It maybe costly, but get an estimate of how much they will charge. That way you can decide if it worth repairing or replacing the whole TV.
I hope I shed some light on the subject for you.
Posted on Jul 20, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
For more details type in this site name "Electro-help" (DO
NOT copy and paste the site name from here.
It may lead you to wrong place) to search box of your search engine
[not in the address bar of your browser], and press "Enter". It is an electronic equipments service help
position of hyphen in between words in site name. The site will appear as it is in
web; subtitled as Service help to electronic home entertainment equipments.
Pull up older posts.
You can locate this site,
either at the bottom part of first search page, or at the top of second.
Detailed descriptions are there to help you.
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