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I have a T-300 softub with a circuit board marked "C-2006". I've measured 110V coming in to the board and 110 volts out of the relay that has no wires connected to the top two terminals. I disconnected the single black wire that feeds the motor from the second relay to measure the voltage from that terminal of the second relay to common and measure less than 110 volts. What advice do you have for next steps? Thanks you, Tom