GE Dishwasher PDW8680N20SS high pitch squeal only - need service manual

[murfndbox]

I have a GE Dishwasher PDW8680N20SS  (my son's) that was not draining. I checked all the hoses and see no blockages. I replaced the discharge pump but now when I attempt to test it, there is only a high pitch squeal and none of the control panel lights come on. I think I replaced the pump connectors correctly and re-connected the power supply wires correctly.

 

Any idea what the noise is? I couldn't find a service manual or wiring diagram on the website for this dishwasher.

 

Thanks

[RegUS_PatOff]

this may be your manual

http://appliantology.org/files/file/448-ge-dw-31-9102-pdw8200-pdw8260-pdw8400-pdw8480-pdw8500-pdw8600-pdw8680/

[murfndbox]

Thanks for the manual link; it is the correct one. I attempted to get the dishwasher to enter "test mode" but it does not seem to respond to anything. None of the panel lights are on - the only thing I notice is a very high-pitched squeal coming from the control panel. Any idea what that is or what might be causing it?

[Samurai Appliance Repair Man]

High pitched squeal and not responding to test mode are classic signs of a bad control board on this model ==> http://www.repairclinic.com/PartDetail/Main-Control-Board/WD21X10369/1475280?modelNumber=PDW8680N20SS