LG RU-42px10c GRADUAL picture failure

[fixdatlg]

Greetings,

I've got two LG RU-42px10c that have simultaneously experienced GRADUAL picture failure. They've been in the lobby of a hotel and have (very rough approximation) 7000 hours on them each. The sound is fine. Picture went from good, to flashing with deteriorated color, some horizontal lines, now to static. Any suggestions? Anybody know where to get a repair manual for this for cheap?

Thanks,

Gonnafixdatlg

[minnie]

#6871QZH033A. It's the z sustain board. It does the majority of the processing.