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How do I check the i2s board? #3

Answered by gmcn42
rhester72 asked this question in Q&A
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Hi @rhester72!

(Note: I didn't read the part about the bridges potentially being wrong until after I built my board, because...because.)

Well, I only just added the info yesterday as I was not aware of the potential problem up to now. My own boards all came with the bridges soldered as in the picture and I carelessly assumed that would be the general case. 🤷‍♂️

Is there any way to check to see why my i2s is completely mute short of desoldering the entire i2s adapter board to look at the bridges? The LCD works, MIDI IN works and I get pwm output.

Yes, but you will need a multimeter to measure resistance.

  1. Disconnect the power supply.
  2. Set the multimeter to a reasonable value, like "100k…

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