Hmmm... yeah, sounds like a failing capacitor, maybe a broken fuse, a transistor... we won't know until you get the Scheamtics and measure each board component OUTSIDE OF CRT AND OFF.
The easy way: Go to eBay or I don't know... Ali Express or...
I'm alive :D Changing Brightness and Contrast to highest does not Change the Noise but as written above it does Change with...eh 'aspect to ratio' ( :D ) 4:3 it is loudest, Panorama is much quieter, 16:9 and Cinema are alike + even quieter.
So...
Usually buzzing happens because air is getting zapped at high voltages inside the CRT, not board.
If you're totally sure it's board, then replace every single cap.
"Well of course that'll fix it without finding what it is", unless you have a...
Hi, my CRT makes this new Sound. How is it called and how do i fix it? I am aware of CRT Safety Procedures. The about area were the noise comes from is on the image :] Changing Power cables does not change a thing and it is loudest on 4:3, 16:9...