Question about LG 42PX5D 42 in. Plasma HDTV

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No pic or sound

LG plasma

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Hi,
If you have confirmed that your power cable is connected properly from your TV to the wall outlet (bypass surge protector strip if you are using one), then no picture and no sound is typical of SMPS (Power Supply) board gone bad. It can cost upwards of $200 plus labor. The good thing is, LG generally offers two (2) years parts and labor warranty for their big screen TVs. LG Repair turn around time is usually fast. Goodluck!

FixYa!

Posted on Jul 11, 2008

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Posted on Jan 02, 2017

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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

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