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RPi + OpenELEC LEDs Make High Pitch

Discussion in 'Hardware Support' started by matchmee, 11 September 2018.

  1. matchmee

    matchmee New Member

    Messages:
    10
    Hardware:
    RPi3
    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/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
     
  2. Akriss

    Akriss Active Member

    Messages:
    355
    Hardware:
    RPi1/Zero, RPi2, RPi3, 32/64bit, +Arduino, +nodeMCU/ESP8266
    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.
     
  3. matchmee

    matchmee New Member

    Messages:
    10
    Hardware:
    RPi3
    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?