Opened the pool that came with the new to us home. The pool was empty and needed some return eyeball and main drain cover replacement. After filling the pool, we flipped the main breaker to the P-4 panel. No readout of any kind at the control pad. No power to pumps (3). No readout at hardwired contol panel in house. Was able to bypass contol system and wire up pumps to incoming power. One pump motor was siezed. (thats another issue) Anyway, I have heard that the circuit boards have been issues in these panels. The issue of no control readouts leads me to think the transformer may be at fault. Any information or suggestions would be greatly appreciated!