Question about LG MU-42PZ90V 42 in. Plasma Television

1 Answer

Powers up with no Picture

I have a 42" LG Plasma T.V. Problem is : It powers on (with green light on) but no picture and unfortunetly no sound.Also removed back panel and noticed little red diode blinking next to reset button. Numbernext to it is LD740. Ceramic Fuses seem fine....but still No Picture. Right now can't afford to get it fixed so any help would be appreciated. I do have a DVM to check any problems but don't know what to look for. Help Please

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  • Anonymous Jan 28, 2009

    I plug in my mu-42pz90v plasma, turn it on, and get a green light, then it turns red. At no point do I ever have pic or sound



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  • 74,251 Answers

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts.
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Posted on Jun 02, 2017


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Posted on Jan 02, 2017

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SOURCE: 42 inch sanyo plasma

This means that your video amp is defected takt out the video ic and replace it.good luck.

Posted on Jul 25, 2008

  • 362 Answers

SOURCE: No picture or sound on LG 42" Plasma

Hi Craig,
Your Tv has a 1 year warranty, you should contact Customer Service as soon as possible. This is the number in the USA 1-800-243-0000
If needed this is the Global Site.
Enter your country then click on Support for the Service Number.
If this helps please rate this solution as a FixYa.

Posted on Jan 29, 2009

  • 2 Answers

SOURCE: LG 42 TV powers up for only a second then goes back out.

Undo the back and see if the fuses are blown. Replace them if they are.

Posted on Jul 08, 2009

SOURCE: No Picture

we gave a polaroid tv and had to fix a problem that we thought was the problem the tv has power but screen stays black. we fixed a bad CapXon 1000uf 10v caps that and the red light on the black board is now blinking before it was just solid red do you have nay suggestions?

Posted on Jan 06, 2010

  • 226 Answers

SOURCE: the plasma fell forward and the glass cracked--can

Probably not, this sounds like a claim on the h o u s e ins but i don't recomend you do it as your premium will go up. If you have insurance that covers accidental damage then you will have to pay the excess. Get a quote first.
I don't think i can help you any further.

Posted on Jan 20, 2010

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