We performed a comprehensive diagnostic and repair service on a Watkins Jetsetter spa in Escondido. Our team accessed the internal mechanical compartment to inspect the Wavemaster jet pump and the primary electrical control system. We identified specific component failures within the circuit board and heating assembly that were preventing the spa from operating correctly. Using digital clamp meters, we tested the electrical draw and continuity across the relays to ensure safe and efficient power delivery. We replaced the faulty Invensys circuit board and serviced the heating elements before reassembling the exterior wood panels. The project concluded with a full system test to verify that the jets and heating cycles were restored to peak performance.