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My panasonic th-42px77u just shut down.... won't power up again... help! :D

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Call repair tech.

Posted on Aug 03, 2008

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Panasonic (TH-50PZ700U) Television won't power up at all as if it was disconnected


Take the back off and check the fuse. If the fuse is good check all capacitors to see if any are puffed up on top, they all should be flat. Replace them if needed with the same # value. My TV had the same issue and it was a $5 capacitor that fixed it.

Dec 28, 2012 | Panasonic (TH-50PZ700U) Television

1 Answer

My th-42px77u shut off while watching


3 blinks with Panasonic TVS denotes the fault with 3.3v SOS D Board. Visit this site for more details. Just type in "electronicshelponline" into the search box of your browser, and click search, and select the site named (Electro-help). You can see a site by this name. Pull up older posts there. Sometimes, ads related to each post might give you details about the availability of spare parts and prices.

Jun 28, 2012 | Panasonic TH-42PZ700U 42 in. Plasma...

1 Answer

My viera th42px77u changes colors - yellows to pink, all the skin tones very pink and greens where there should not be green.


Likely it is the "main" board that processes all signal although unlikely it could also be an issue with the power supply board.

If you GOOGLE the model number with "circuit boards" and or parts you will get an idea of what the parts cost may be but labor is another issue.

Mar 22, 2012 | Panasonic Televison & Video

1 Answer

I accidentally overheated my Panasonic Plasma TV TH-42PZ700U. It won't turn on, and the power button is just blinking. What can I do?


All you can do is: Take the plug out of the wall (power) - wait 2hrs, plug in and try again. If it will not work after being cooled and the capacitors drained (which this will do) then it needs repair.

Mar 20, 2012 | Panasonic TH-42PZ700U 42 in. Plasma...

1 Answer

PANASONIC 42" PLAZMA ModelTH-42PX77U Set runs for


I hate to say it but these Panasonic plasmas are known for power supply issues. If you google the model # looking for power supply price you will have a pretty good guess at repair cost. Usually around 175-245 us dollars at reasonably priced repair shop. Good luck, Russmann.

Apr 29, 2011 | Panasonic Televison & Video

1 Answer

I have a Panasonic plasma TV model# TH-42PX75U --- here is a link to Panasonic web site for this model...


Unfortunately your going to have to have it serviced by an Authorized Panasonic Dealer. Independent shops will not be authorized to order parts without the consent of Panasonic. They are rough to deal with.

Dec 20, 2010 | Televison & Video

1 Answer

My panasonic plasma tv model number th-42px77u won't turn on


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 most common thing to go out is the circuit board that supply power to the screen. Commonly called 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.

If by chance the TV is still under warranty, go that route.
If not under warranty and 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 circuit diagrams, test points, and part# lists. Usually, cost under $20. And most cases the new part cost less than $15.

I hope I shed some light on the subject for you.

Jul 08, 2009 | Panasonic TH-42PX75U 42 in. Plasma...

2 Answers

Panasonic TH-42PX75U won't turn on


Your powerboard is damaged, and need to be replaced.

Sometimes it appear the TV is working again with no problem but it is only a matter of time for the board to get completely damaged.

May 30, 2009 | Panasonic TH-42PX75U 42 in. Plasma...

1 Answer

Panasonic 42px77u hd 2007 screen crack!


You can replace the panel if you can find the spare part. It'll work after you replace the panel. But the panel itself is quite expensive. Almost as much as a new tv.

Jan 25, 2008 | Panasonic TH-42PWD7UY 42 in. EDTV-Ready...

1 Answer

TH-42PX77U wont turn on with remote....?


Panasonic uses the flashing of the power LED as a guide for trouble shooting their sets when no image is visible. So if the power LED blinks 3 times then the D board is defective. Basically its the main control board. It needs to be serviced.

Nov 29, 2007 | Panasonic TH-42PD50U 42 in. Plasma EDTV

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