Lg tv turns on then switches off

Paul_299

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Mar 29, 2017
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Hi

I have a lg 47ln5400 tv, when I turn it on the lg logo comes on for a few seconds then quickly switches off and the red light blinks twice.

Any idea if this is the leds, bad main board or psu board?
 

Skullidug

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May 21, 2017
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Skullidug

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May 21, 2017
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I had exact same problem with an LG 50 inch LCD. A serviceman checked it today. If you shine a light on the TV you can just see a picture. He quoted me $400 Australian to take away and replace the backlight which has failed. Hope this helps Paul_299.
 

agilitynan

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Sep 25, 2017
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Interested to know if you have found the problem. Mine does the exact same thing!
 
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