I have a used electronic speed controller(model N) from a brother sewing machine. Input voltage to controller is 120V but output voltage is nada, zip, zero. Does not matter if pressed to floor or not, still no voltage. I'm a nob at electronics but good at replacing components if problem(s) can be discovered. I do have a simple capacitor tester and all three tested ok within specs. Attached are pics of board. If someone could enlighten me as to further multi-meter tests to try I'd be eternally grateful
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