The Solid Controls Inc PR102‑A1 is a compact industrial controller board used in motor drive and process automation systems. Common failure points on this model include the integrated power supply section (12 V/5 A output), voltage regulator ICs, and I/O driver chips; overheating or capacitor degradation often causes intermittent operation or total shutdown. For initial troubleshooting, verify the 115 VAC input to the board, check the regulated 12 V and 5 V rails with a multimeter, and inspect for burned components or loose solder joints on the power section. Next, review any diagnostic LEDs or error codes displayed by the controller and perform a continuity test of the main I/O contacts before proceeding to component replacement.[oss-gpt-20b]