Static noise on Audio channel

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  • November 19, 2024 at 8:12 PM #64119
    VICtor64
    Participant

      I recently installed these RF bypass board on two different C64 mainboards

      Both are causing a kind of static noise on the audio channel, even when no sound is playing.
      Can anyone provide some guidance on what could possibly be wrong?

      Additional information:
      – Board revision 250425
      – The problem persists even with the SID removed.
      – The problem does not exist with the original RF modulator installed.
      – I have already checked for shorts on the RF bypass
      – GND1 is connected to ground

      suggestions welcome

      • This topic was modified 1 day, 10 hours ago by VICtor64.
      • This topic was modified 1 day, 10 hours ago by VICtor64.
      November 20, 2024 at 12:19 PM #64127
      BuckoA51
      Keymaster

        Very strange, we’ve never had issues with audio reported before in over 100 boards sold.

        Would it be possible for you to try a different AV cable?

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