LEDs Make High Pitch

  • Hey guys,


    I have a build that I set up for my LEDs on my LG OLED TV using a Raspberry Pi and I also have an external power supply. My issue is that every time the screen has a white color on the LEDs the power supply starts to make a very high pitch noise that most people can't even hear but I hear it and it drives me insane. Do I need a larger/higher quality power supply?


    5V/20A Power Supply:
    https://www.amazon.com/gp/product/B01HY4SIHQ?tag=hyperioforum-21&ie=UTF8&psc=1

  • How many led's are you driving?


    20A should power at least 310'ish.


    Coil whine is common on cheaper made supply's.


    Hope it's of help.

  • I have 266 lights. It could be a cheap power supply but I thought I bought one highly recommended. Is there one you would suggest?

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