Question about LG 42PX4DR 42 in. Plasma TV

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Lg plasma problems

My screen sparkles after like an hour of usage.

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Re: lg plasma problems

Try to reduce the Vs voltage about 5-10V below its spec value. Vs is from the Power Supply board. The spec value of Vs was printed on the back of PDP panel. (You need to open the back cover)

Posted on Jan 24, 2008

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White dots across screen

Sounds like sparkles, this can be resolved with a software update or replacement of either the Control board & / or the Y & Z sustain board. In extreme cases the screen replacement is the only remedy.

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Samsung 42' plasma tv,screen keep flashing, blurry,no pics

I'm not really sure what causes this but I might be able to help.
I have an LG 42 plasma which had the same problem. In my case I removed the video and the tuner board (they both were mounted on the same frame which was screwed on the tv chassis) and installed them in a "wooden box" so that there would be no electrical contact with the rest of the chassis except from the cables connected to them. It now works fine.

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ned to adjust the VS-voltage or the VSCAN-voltage

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Green & white sparkles, also picture changing to pinks/blues then goes off.

hi are you selling this set as i need some boards to tryn fix mine ? where are you located thanks

Feb 28, 2008 | LG 42PC1D 42 in. Plasma Television

1 Answer

Lg 42pc1d plasma tv red sparkles

I had the same problem, LG came out and it turned out to be the board that filters out the interference around the screen. I pretty sure that was it, took them 10 mins to fix by replacing a few of the boards inside the screen. Sorry I can't be more specific but its not an unfixable problem, so nothing to worry about.

Nov 11, 2007 | LG 42PC1D 42 in. Plasma Television

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Vscan voltages on LG Plasma

Are your sparkles mainly red pixels flashing randomly over the TV screen, especially over darker areas? If so your sparkles are I believe a discharge problem, and can be fixed with a firmware upgrade, which I think resets and corrects the voltage and removes the sparkles, which is caused by misfiring of the gases produced with plasma TV's. I have had my TV repaired with a firmware upgrade, which takes only 10-15 minutes and is reasonably cheap repair, and now the TV looks great, no more sparkles. Don't play around with the voltages let the pros fix it, also beware! leave this too long and it can become permanent, and need a new screen which is half the price of the a new TV.

Oct 15, 2007 | LG 42PX5D 42 in. Plasma HDTV

7 Answers


Makes you wonder why nobody is taking on the problem, doesn't it?
Well , to the best of my knowledge, it is because nobody really can.
To understand why you have to understand what do they sparkles come from.
They are random electricity discharges coming from capacitors or other components that act like capacitors, but mostly capacitors.
When laymen hear about capacitors they usually associate the word with bulged electrolytic capacitors, which often cause problems in electronics of all kind.
Well this time it isn't about them.
It's about all other capacitors - or other components exposing similar qualities - which are installed on the board. Most of them are small filter capacitors put in parallel to the big ones or to other passive components such as diodes and resistors.
The excessive heat developed by the sustain boards damages those capacitors. It hardens the electrostatic material they are made of and small breaks in it start occurring at voltages that shouldn't otherwise be causing issues.
The trouble is, they can be everywhere. You can't just pinpoint which ones were caught at fault and causing the sparkles.
When it gets REALLY bad eventually the whole capacitor burns and either shorts or, more commonly, just breaks.
Believe it or not I've seen a board that exploded before my very eyes and , after the explosion, started working LIKE A CHARM!
Turned out a small filter capacitor had blown. It as not essential for the board's functionality and after being problematic for so long and causing image deffects it had eventually shorted completely and literally exploded.
Luckily, the short it had created was too short in time and apparently in a circuit that could take the load for a short while without getting damaged.
So after it blew everything worked just great!
it's a real story from my repair experience.
Hope this helps all consumers, DIY enthusiasts and competitors alike :-)
For more you are welcome to visit our site and read our tech repair blog at
and .
Good luck!

Aug 26, 2007 | LG 42PX5D 42 in. Plasma HDTV

2 Answers

LG Plasma TV

first i would try unplugging it for about 5 minutes to reset the set. after that i would need more detail as to the problem is there sparkles in the screen is it a certain portion of the set any info you can give

Jul 03, 2007 | LG 42PX4DR 42 in. Plasma TV

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