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I have an LG plasma tv model # 42pg20-ua. Everytime I try to turn it on the tv keeps clicking turning from blue to red. Tv never actually turns on. I keep trying to turn it on, but it just clicks and goes back to red. Sometimes it will stay on blue and just keep clicking until it turns red and I have to unplug it to try again. What do you think is the problem and would it be really expensive to fix?

Posted by Anonymous on

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  • 194 Answers

That is usually a t-con board or video card. ebayers usually have those parts reasonable.

that's how I fixed one of mine.

it could be the power board which is the costlier part.

Posted on Aug 01, 2017

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Posted on Jan 02, 2017

freelance-au
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SOURCE: LG 60PC1D making clicking sounds

Hi
A common problem for these is bad capacitors in the power supply, Remove the back from your Tv and look at the power supply on the left hand side.

You will see roughly around 9 x capacitors that are bulged / domed shaped on top usually these are valued at 3300uf 10V any that have bulged or leaked a brown like substance should be changed.
This will cure the problem as they overheat being sat next to a heatsink that gets very hot!
Try and change them for the same 3300uf but a higher voltage.
Hope this helps
Please rate my reply ++++

Posted on Apr 05, 2010

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1 Answer

Lg 42PG20 possible to work on a 220 volts?


The correct answer is "it depends on the power supply board used in it".

If you click on the picture at

http://www.coppelltvrepair.com/p/716/lg-42pg20-ua-power-supply-board-repair-service

and look at the lower left corner of the board you will see

100v-240V

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That board used in 42PG20 will definitely work on 220V.

Your TV may have a different board inside though.

DO not assume...verify.

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www.coppelltvrepair.com

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This is a link for repairing the power supply board of a LG 42PG20, which also contains a link to an article on how to test the board's functionality, which is actually fairly simple:
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The power supply board of the 42PG20-UA is a known source of exactly this problem, although definitely not the only one that could possibly cause it.

Below is a link for a repair of the board, but the listing also contains a link to an article on how to test the power supply board alone, which is pretty useful before spending time and money sending it for repair. If anything you can rule one board out:
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Hello,

Your power supply board is dead, u know basic electronics’ and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.
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There are several known issues that can cause that.

The top candidate is the main board, the next is the Y-Main board.

Here's a link for repairing the power supply board of LG 42PG20, which also contains a link to how to test your own board to see if it is good or not:

http://www.coppelltvrepair.com/p/716/lg-42pg20-ua-power-supply-board-repair-service

Hope this helps!

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hello, your power supply has to be repaired and you are looking at $275.00 for this job
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