Hello, I am trying to fix a Samsung UN46F6800 LED TV. The issue is the power supply board makes a vibrating and buzzing noise for couple minutes after startup.

[URL="https://m.youtube.com/watch?v=dw_SWrcpzKo&feature=youtu.be"]I've recorded a video of the noise here.[/URL]

After 3-5 minutes, the noise goes away and everything on the TV works fine.

I took the back off the TV and closely inspected the power supply board, paying close attention for any bulged electrolytic capacitors. None of the capacitors look bulged or blown.

If...

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Hello!

Interested in computers and electronics repair.