Jandy 8124A 8125B Pool control board

Jandy 8124A/8125B is a power‑center PCB that manages pump, heater, and lighting circuits in Aqualink pool systems. Common failure points on this class of boards include burned or cracked voltage regulator traces, failed MOSFETs on the motor driver section, and degraded capacitors causing brown‑out conditions; intermittent communication can also arise from loose I/O connectors or corrupted firmware. First‑check steps: verify 115/230 V input to the board’s power supply rails, inspect for visible burn marks or corrosion on the PCB, and read any diagnostic LEDs or error codes displayed by the control panel.[oss-gpt-20b]

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