Special thanks to Stan Dye. I got a new PCM1804 today and swapped it out. Used ChipQuik to remove old one and solder paste and hot air rework station to install new one. Ensured I used ESD strap while handling and very happy to report that the QMX now works as advertised.?
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Stan, I learned a ton about signal tracing around the 1804 from you. Important thing of note: Even though I had good 12KHz sine waves on all 4 pins and what looked like data coming out, the 1804 was still the issue. I could not verify that it was a good data stream. I think the real proof is the bad IQ representation in the hardware test.
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73
Bob
WV7W
