I have a whirlpool coin operated washer model cae2743bq that has no functions, and no lights. I can not get the unit to respond at all. Tried unplugging it, waiting for 10 minutes then re plugging it back in. The power outlet is good,as I can plug in the adjacent machine and it works fine. I opened up the panel where the control board is and there is a green led light on, on the board. I assume this verifies there is power to the board. I did the same with the adjacent working machine and it's green led light on the control board is on as well. Ive also tried to get it to respond to diagnostics with the washer setting knob, starting at normal then left, right, right, left, right, but again no response and no lights. I'm wondering if the control board is the issue, or if it is the switch in the meter case. Any way of isolating the cause?