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How hard is it to crack open potted circuits without ruining the erectronics?
Very hard. It will either involve strong solvents like MEKK which will soften the epoxy or very strong acids to dissolve it. And lots of work to physically remove the epoxy, with a reasonable chance you'll damage the electronic components in the process. Then you'd have to do a fault-finding process, and then replace the FUBARed components.
Lots of work, no guarantee of success basically.
Bummer. Maybe there's a market for erectronic hackers out there to mess with the internals.
How hard is it to crack open potted circuits without ruining the erectronics? It would be useful if you could get replacement boards for these but I guess they're all heavily integrated with arms/axles and shit so even if you did replace them they'd have to be recalibrated, etc.