LG 43uf680v comes on then goes black screen three rotating coloured

LG 43uf680v comes on then goes black screen three rotating coloured

TV goes to start up then goes black screen and 3 rotating coloured balls pink blue and yellow left on like it for 24 hours no change

ANSWERS:

"This is apparently a fairly common problem that requires replacing an Eprom IC on the main board (part # EAX66564303). I don't have the service manual so I don't have the part number of the IC. You can try to locate a replacement main board. That should resolve the problem.

Dan"