PN42B430 picture failure y-buffer problem

This video was initially posted to show the error to other people who might help me that's why there is no actual content :-) . After a few weeks I was lucky enough to have another functioning TV I could take boards from for testing. Against all odds this was caused by a defective Y-buffer board. See more info here: https://www.badcaps.net/forum/showthread.php?t=37409 I wasn`t able to find any obviously defective component on the board though, but replacing the buffer board solved the problem