my names paul, and i left a short vid of what the jvc lt42 is doing on start up now. Should i be posting hear im unsure. In the mean time you asked me if the vestel psu were identical it would appear not quite, ive posted a pic with the new board on the bottom and old one on top. Apart from the switch plug in the old top board, not preasant on the new board at bottom. But 2 connecting wires in its place. There is one more differance in the 2 boards i can see, which is L817 in the old board appears to be empty. on old one but has TH2 in its place.. Where as new board has L817 Preasant and TH2 empty. I have studyed both boards in great detail and there are definatly no other differances, do you think this is in any way related to my problem.i cant get pic to upload here so im going to post picture to google plus, i ve never posted on a forum as such read many but never used one so im not quite sure is this posted in right place thanks paul.