Question about LG 42PC3RA 42 in. HD-Ready Plasma TV

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I have a lg plasma model ru-42-px-11, it flickers for about 1/2 an hour when first turned on and then works fine after it is warmed up. Any solution?

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This may seem like a generic answer, but it's not. Your Power Supply board may have a few failing capacitors. A capacitor will often "fly right" after it warms up a bit. You should stop using it until this problem is resolved. Most often the capacitors are used to filter out "ripple" from the DC voltage it is in circuit with. When the capacitor is weak or failing, the "ripple" or unclean voltage can cause damage to the Y-Sustain board. An easy fix can become a costly repair. I hope this was helpful, best wishes.

Posted on Aug 31, 2010

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Posted on Jan 02, 2017

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I have sound, but screen flickers and cant get picture, it sometimes shows a picture for a min then goes again, and off and on we get a red bar down left side


What you most likely need is this:
http://cgi.ebay.com/NEW-LG-Y-SUSTAIN-SUS-BOARD-RU-42PX10-RU-42PX10C-PLASMA-/400195756638?pt=LH_DefaultDomain_0&hash=item5d2d86a25e

There's a minor chance it may be something else, but with the sporadic problem appeareance it would be impossible to diagnose remotely.

This is the most likely reason for similar problems, but, I repeat, no guarantees.

I am not anyhow affiliated with whoever is selling this. You may be able to find better deals elsewhere.

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This will be your Y SUSTAIN board on the left hand side when you take the back off.
Plenty available on ebay, Very easy fix

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Check the fuse on Y Sustain Board. If the fuse was gone, replace that board.

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Hi,

How old is your plasma?

I believe the gas that powers the plasma only has x-hour's life and therfor may need to go for repair in a tv repair shop

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