I have no power to my jandy control box. I've checked the breaker and it's good. I've checked the power from the breaker to the point at which it connects to the swg and it's good. So it's the circuit board or the power module. My unit has 2 small fuses which were blown when I started my diagnostics and I have replaced. Still no power at the box. My question is, is there a way to test the power module and the circuit board to see which one or both are bad.