Question about JVC GM-V42UG 42 in. Plasma EDTV

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Diagnostic Revealed Failed Power Supply Unit

Circuit City tentatively diagnosed a failure in our power supply unit (without any testing). Won't guaranty that is the problem and wants us to spend big bugs to "see". Can we purchase this part and install it ourselves for our JVC? How and where do we purchase? Are there manuals that will help?
We are in Richmond, Virginia

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  • DWASPA Feb 10, 2008

    The self-diagnostic lamp 1 (at the top) blinks continuously--all are red. Thanks!

  • Carl Manaloto
    Carl Manaloto May 11, 2010

    Tell me in detail what your set is doing. If there are blinking LEDs involved then tell me how many times it blinks and what color it's blinking.



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That blinking code means that the temperature is too high in the power supply circuit. You might very well have a bad power supply board. But I don't suggest replacing it unless you fully know what you'll be up against. There are several plugs and flat ribbon cables and if you hook it back up wrong it could do other damage. To purchase the board you can go to If you're unsure of what to do then I suggest you take it to someone who is an authorized JVC service center near you.

Posted on Feb 10, 2008

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Chances are also if its Dead to start with is replace the fuse in the supply line.(Simple test)... Circuit City is not qulafied to do anything other than plug it in and try to turn on. Corporate will not let them even have a soldering iron for the most part as the Liabilitiy is too high in their opinion.. (Weve had a ton of various Items referred to us by all of the Big-Dogs/Take the diagnostic fees and run types)..

Just another option and Am not trying to down you either C-dog..

Posted on Feb 10, 2008

  • Ken LaDere Feb 10, 2008

    That means its not Dead and perhaps C-dog is more better to talk to.. (I'm shooting in the dark and Dead means No power).. If he knows the codes? Hey run with it bud!


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hi welcome to fixya
i want to clarify first the problem sir so as of now the problem with your tv won't power on then you are using again the old main board is that right ? when you use the new replacement main board the tv is functioning will the only problem is that the HDMI / DVI inputs doesn't work. and now you encountered power supply problem like won't start up or something that cut the supply in which the stand by indicator is turn off so as my idea it has a problem with the old board. but before you come up with the board making sure all the connectors coming from the power supply is properly connected to the main board as will as flexible and lvds cable for the T-con board is properly inserted.just let me know if is that what you are asking for so i can give you additional solution thanks for consulting the fixya.

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My tv does not turn on


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