Grounding the MCLK pin by shorting the solder pads next to that pin to force internal clock generation is how MIcroDexed uses this module in their system which works quite well, so I don't think that would be a factor in why it stopped working...
I’m working on an 8-channel audio project with Teensy 4.1 and four PCM5102A DACs using I²S. At first, the DACs weren’t producing any sound even though the wiring was correct. After troubleshooting, I found that grounding the SCK (MCLK) pin made...