A little TV Troubleshooting help on an Audio Forum?

Hoping this allowed. If not, Mods please do what you have to!

LG 32lc7dc Power off red led.

Power on: 18 Green blinks, then nothing but vertical lines (se below) and after a short while turns off.

Replaced the PS board and T-Con board. Could this be a Main board problem or the connections to the top/sides of the picture panel?

Thanks for any ideas!
 

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