Lg tv turns on then switches off

Paul_299

Prominent
Mar 29, 2017
1
0
510
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

Prominent
May 21, 2017
2
0
510


 

Skullidug

Prominent
May 21, 2017
2
0
510
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

Prominent
Sep 25, 2017
1
0
510


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