when the tv aborts power up can you hear a clicking sound coming from the power regulator board,? if you listen carefully and you do,then to
replace the lvds cable (p/n: vs30041693) and add a 47uf(p/n: vs30000396, cap el47uf16v) electrolytic capacitor to power regulation board .
Check the uf caps on the board for bulging or venting,
resolder all bad joints if any are suspect,
I think the issue lies with the power board.