samsung lcd tv buzzing power supply/inverter

[petehall347]

i have this samsung tv here with a buzzing BN44-00264A power / inverter board
it came to me dead . main fuse blown fs801s 6.3a
also a shorted fet qp801s qp802s ... not sure which was shorted but changed both anyway .
also changed up801s for good measure ..no other apparent faulty components in the area .
i haven't pulled any caps to test yet .i thought i would ask here first if anyone had any clues as to what is causing the buzzing .
noise seems to be coming from lp801s .
an important thing i have noticed when i plugged it into my mains power meter / conditioner i see it looking like the tv is pulling 3kw .. i dont think it can be as it would be bloody hot .
if i warm up that area with hair drier the noise almost disappears and the power meter drops a lot .if i freeze cp801s and cp802s the noise starts up again ...
also if i turn the back-lights down the noise lowers quite a bit . brightness affect it slightly too .
tv is le40b650t2w . not that it should matter right now .

manual is here ... https://www.google.co.uk/url?sa=t&rc...42059868,d.bGg
p.s i am usually at audiokarma ...