Hello;
After rebuilding the SMPS inside my 32" Zenith Z32X31D the other day (lightning killed it); The past couple of days I been noticing a very loud ear-piercing high pitch whine coming from the flyback transformer and when I apply a small amount of pressure to the side of the flyback transformer (using a insulated screwdriver) it stops making the noise, then when I let go it starts back up again. So it seems when pressure is applied to it; it will shutup. I think heat the expansion of the ferrite core; triggers it maybe?
I sometimes hear this distinct sound when I am in stores around the TV section. I noticed it ALWAYS made this noise since the day I bought it, usually when the TV is first turned on for a few minutes, then it would stop. But it's louder now than ever. Should I replace the capacitors in the H.O.T. section also? Thanks for any feedback