Question about LG MZ-42PZ14 42 in. Plasma Television

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Red Spots on 42" LG plasma t.v.

Whenever the screen is dark, hundreds of red spots "dancing around" on the screen can be seen. Any ideas what may cause this? I appreciate any helpthat you may be able to provide.

Posted by Dennis O'Neill on

  • 13 more comments 
  • dsdaniel Nov 23, 2007

    I have the same problem with LG plasma.

  • Anonymous Nov 29, 2007

    We have same issue with Toshiba 42" plasma. Does not occur or is not visible during regular viewing however.

  • Anonymous Nov 30, 2007

    I have the same problem with a 42" Hitachi plasma. It's not visible when the screen is bright, however it is very noticeable when the screen is black.

  • Anonymous Dec 13, 2007

    Me too 42" Toshiba

  • Anonymous Dec 30, 2007

    Same problem here with a 50" LG Plasma. Exact same problem.

  • Stew72 Mar 21, 2008

    I have the same with my 42 inch Hitachi plamsa, but I have noticed that this only appears after 30 minutes to one hour, I think when the TV gets hot.

  • DMRdawnr May 14, 2008

    Same problem with Phillips 52" plasma with Ambilight

  • Anonymous Jun 23, 2008

    same exact problem with my philips ambilite

  • Anonymous Aug 07, 2008

    Samething dark screen dancing red spots.

  • daviddarby Aug 11, 2008

    Same problem with my LG 42 ince plasma TV. Dancing red and green spots when the screen is dark.

  • Anonymous Oct 07, 2008

    I have an Hitachi 42 inch sd Plasma. After a year of owning it, the red and green jumping spots started to appear on my left side of the screen it has become worse over time and it is really anoying to watch,In order to make it less appearing i have to have my brightness and contrast set to the highest setting..

  • Anonymous Oct 08, 2008

    I have actually tried, using every input including Component and AV and I still have the same problem, I have tried to take away all other cables and untangle the ones left and nothing works. I still think it has something to do with the unit getting hot, as it only happens after it has been turned on for about 30 minutes.

  • debsnpete Oct 08, 2008

    same problem here,but it isnt connected to anything HD so not sure if the HDMI input is our problem.

  • Anonymous Jan 02, 2009

    Red and green spots whenever the screen is dark

  • dlukenda Jan 04, 2009

    I have a LG Plasma 42PC1D with the same red spot problems. I called LG and they dont stand by their products after one year. My only solution is to never by LG again.

    PS. Remember the old crappy TV brand called Goldstar? I guess LG didn't like their old name either.



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The dancing spots can be sorted by you taking the back panel off and adjusting the va and vs adjusting nobs , you will need a multimeter so you you can adjust the voltage to the right settings that are on a sticker on the back of the panel. You must remember to connect the black pointer to the earthed wire to get and the red to the live wire that has va or vs at the end of it. The right voltage measurements will be be found on a sticker at the back of the panel.
I advise you not to touch the setup and setdn nobs as these are factory settings and should not be touched.
If the va and vs do not sought the problem then try the vy and vsc adjusting nobs but only touch those if the va and vs does not fix your problem first.
Once you have done everything right your tv should be better then before with clearer pictures.
I hope this helps and be careful not to get zapped.

Posted on Dec 13, 2008

  • chris kelm Feb 17, 2013

    were are the va vs on the back pannel




Had red snow on my 22" LCD and the problem ended up being a cable which wasnt fully inserted.
red spots disappeared the moment i pushed the cable in fully

Posted on Oct 20, 2008



Red and green snow in lower center of 50 inch plasma magnavox have to have contrast almost all the way down to minimise problem so tv cant be as bright as i would perfer but if contrast is all the way up, their will be blue dots along with the red and green- if somebody knows how to fix or diagnose problem please post-

Posted on Oct 07, 2008


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This is a partial solution because it did not completely get rid of my "red snow". However, it did minimize it.

I installed a three phase power conditioner for all of my AV equipment and was amazed at how much it helped. I do now think the problem is an interference problem, unfortunately, I also think that the HDMI input on my set is picking it up, not any of my cables.

If anyone else tries this and it helps, please post here.

Posted on Jan 08, 2008

  • Anonymous Oct 07, 2008

    Seems a lot of people with plasmas have this problem. I can tell everyone one thing, it's not the power supply board. Mine went out and I had it replaced. I had hoped it would fix the problem with the red sparkles, but it did not. Problem remains exactly the same. I still suspect the HDMI input, since I don't have the problem on any other inputs (component and standard AV).



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Could it be static from the many twisted and coiled lines running to the tv,reciever,etc?

Posted on Jan 08, 2008

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