LG LED TV no picture, just faint blue screen Model 55LB5550

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  #1  
Old 01-22-18, 07:31 PM
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LG LED TV no picture, just faint blue screen Model 55LB5550

TV suddenly went to faint blue screen, no picture.

None of remote buttons change anything. Push "Settings" or "Picture" buttons ... nothing.

Removed back cover. All boards look mint .... no dark spots, bulging caps, etc.

Anyone have suggestion to which of three circuit boards might be problem or what to check further for?

Power supply:
https://www.ebay.com/itm/LG-55LB5550...19.m1438.l2649

Main board:
https://www.ebay.com/itm/LG-55LB5550...19.m1438.l2649

Tcon board:
https://www.ebay.com/itm/LG-55LB5550...19.m1438.l2649
 
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  #2  
Old 01-22-18, 08:51 PM
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The faint blue screen probably means the power supply and backlight are working.
First thought is Tcon board. I'll poke around some more.
 
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