I had found that at the top of the main board in the centre behind two transistors there are two green capacitors 15uf 1000v working 1" x 1/4 had gone dry jointed, I just re soldered them, and hay presto all working once again, please make sure to mains plug is out. You will find a load of screws to get the back off. Lay the TV flat on a towel or blanked on the screen facing down, on a table, or you will get Bach ache.
Good luck.
G6HHH
December 2014
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