weixin_39804641
2020-12-08 19:34 阅读 0

Ground noise

Hi, I built a radio music. Everything works fine except I have a buzz or ground noise as soon as the module plays or has something plugged in, like an lfo or whatever. Even is the out is not connected, I hear the noise. I tried to decrease the volume, but it didn't change anything. I also resoldered every joint, tried not to heat the diodes etc... When I touch the pins of the TL074 socket when it's playing, it makes a lot of noise. Do you think the problem can come from this IC? Do I need to change it? Great module by the way!

该提问来源于开源项目:TomWhitwell/RadioMusic

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4条回答 默认 最新

  • weixin_39630247 weixin_39630247 2020-12-08 19:34

    same problem... but at the same time the sound of the sample slowly fades away and little distort... i try to put 100k resostor, as in the issue #70 and write here, if something change

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  • weixin_39630247 weixin_39630247 2020-12-08 19:34

    yes, i confirm that after adding 100k resistor - no problems in module (5 hours - ok)

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  • weixin_39804641 weixin_39804641 2020-12-08 19:34

    Ok I will try this thanks!

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  • weixin_39910824 weixin_39910824 2020-12-08 19:34

    Hi ! having the same issue here , did it work for you Zek75 ?

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