Sony KD75XF9005 - whine

[EddScott]

We've noticed a whine coming from the left hand side of the living room TV. It's almost constant but will go away when on the initial menu screen but returns when watching say Netflix etc.

Nothing has been moved/changed so I'm leaning towards a growing fault with the TV itself. Going to take off the wall and remove the back. If the whine is from a particular board, I'll see if it can be replaced.

Just wondering if anyone has had anything similar - appreciate this is an older TV now.

 

[LuckyBenski]

Likely something related to power supply or backlight if it kicks in when some screens are being shown. I've had TVs and monitors do this only for bright images for instance.

FYI there are generally two PCBs in a TV - power supply board and logic board.