I finally finished off my OPL3 module, using the OPL3 chipsets I got from the bulk order.
Good news: They work, sort of.
Bad news: They work, sort of.
Here's the troubleshooting log so far.
NB: I refer to parts by references on schematic PDF, actual part references on SmashTV's PCB and website are DIFFERENT!
I uploaded the FM testtone app and only got the 1kHz tone on channels 1+2.
Tested connectivity in the opamp stages and voltages, all seems OK.
Swapped around opamp ICs to prove th