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My plasma tv powers up and then shuts off

Why does my tv power up then shut off?

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There is some component(s) on one of the boards that is causing too high a current pull, or the power supply itself is failing. This has to be verified by the tech. He will do board substitution to locate the bad circuit board.


Jerry G.

Posted on May 14, 2008

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1 Answer

Tv come on then shuts off


Does the power light blink after it shuts down? The number of blinks will usually indicate which area is failing. Most plasma tv's fail due to YSUS and Y buffer board failures.

Apr 23, 2014 | LG 50PC3D 50 in. Plasma Television

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Help


A component in the TV is failing and is not receiving correct voltage, which is causing the TV to enter " protection mode" and shut off. Could be any part of the TV but I would start with the power supply and go from there.

Here is some basic info on testing the power supply.
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Why is my 50 inch sanyo plasma power up with no picture then shutting down after a few seconds


A component in the TV is failing and is not receiving correct voltage, which is causing the TV to enter " protection mode" and shut off. Could be any part of the TV but I would start with the power supply and go from there.

For more info post the model number of your TV

Here is some basic info on testing the power supply.
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1 Answer

50" lg plasma tv when i turn it on it shuts down in a few sec after doing this several times it will eventually stay on what can i do


The power supply board have problems,it not giving the tv the right votage anymore.That why it shutting down,not sustancening power to the tv anymore.That the board,where the power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power board for the replacement.

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I don't know but I'm having a similar problem. I have a plasma
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Yes, you have power supply issue.
the power on circuit is malfunctioning and the flashes is the indication that the voltage levels for the power on regulation is not correct therefore shut down to protect the circuit from further damage. You TV unit needs servicing by an plasma TV specialist.
Also check to see if you do not have the TV in sleep or hibernation mode.

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