We have a Hayward/Goldline Aqua Logic AQL-PS-8 Control Board. Our main pump will turn on with the circuit breaker, but it cannot turn off or on again using the builtin timer. The other pumps, such as the waterfall and pool wall fountain pumps do work by the timer. We recently replaced the C3 supercapacitor on the PCB. It worked at first, but it won't operate automatically. We are thinking of replacing the U2 real time clock chip and the X2 crystal, but we're afraid of damaging the board completely. Anybody with experience changing out the U2 or X2, or have ideas of what would cause the timer to not work the main pump while still controlling the other pumps?