By now, that's the least of the concerns. If they use linear PSUs with massive electrolytic capacitors, I'll bet they're toast (dried or leaking, and so far out

By now, that's the least of the concerns. If they use linear PSUs with massive electrolytic capacitors, I'll bet they're toast (dried or leaking, and so far outside of spec). And anywhere with any amount of humidity without desiccant packets and sealed in plastic will experience corrosion of PCBs and connectors.