been reading your post with interest, i wondered if you meant the main pcb psu or the sub psu, all the sub one does is provide 5v and the relay which fires the main psu, ysus zsus and others, we do the matsui version of same plasma. we also do a repair service on these. just check if the stby 5 v is present or not, they do fail a lot, but dont go buying full set, ill repair if you wish, thereare two versions, one also supplies feed for audio chip, the later one didnt, either way we can sort u out
regards
tony walker
