andrewb
Well-known member
FYI, it isn't likely to be a bad solder joint (again, not technically impossible, but not likely on these). There's most likely a bad chip somewhere. It will require systematically tracing through the various subsystems and figuring out what is working and what isn't, to isolate the issue.
Also, when debugging, it's best to treat the 3-board stack as one system. It's generally harder to debug just one of the boards by itself. The boardset requires multiple voltages to run all of the subsystems, and you typically either need a test bench that can supply all of those voltages, or you can test the board in the cabinet (which is a little more challenging, but it can be done), which can also supply the voltages.
Good luck and feel free to update this thread once it's figured out.
Also, when debugging, it's best to treat the 3-board stack as one system. It's generally harder to debug just one of the boards by itself. The boardset requires multiple voltages to run all of the subsystems, and you typically either need a test bench that can supply all of those voltages, or you can test the board in the cabinet (which is a little more challenging, but it can be done), which can also supply the voltages.
Good luck and feel free to update this thread once it's figured out.