I've bought the new PCB assembly from AppliancePartsPros but can't figure out how to get the old card out of the dishwasher- I've removed all the screws I can see but the card still won't budge. I asked this question last week but didn't get an answer.
Richard for Model Number MDB7130AWB
Answer Hello Richard. Here are the instructions from the manufacture. Hope thiis helps.
PC Board Removal
1. Disconnect power to the machine.
2. Remove the Inner Door Panel.
3. To access PC Board, remove 1/4" screw on PC Board Housing Cover.
4. To remove PC Board, loosen (2) 1/4" screws securing PC Board Base to Control Panel.
5. Remove pin and ribbon connectors from PC Board.
6. Depress tabs on PC Board Housing to remove PC Board.
1 person found this answer helpful.
My dishwasher simply quit. The door switchs had good continuity, so I looked at
the control board and found two large components, in series, that got hot enough to blacken/burn the board, I am sure they are not making continuity in there solder joints. I fear that if I simply put in a new control board the same thing will happen again. What could have caused this, and how do I check everything to make sure a new control will fix the problem? Better yet, what are these two components, could I simply replace them - the runs on the board are fine.
Ole Ray for Model Number MDB7100AWW
Answer Ole Ray, You're on the right track, but The resistors in the motor circuit and the heater circuit on the control board, have a tendency to discolor and blacken, but the unit will operate. You need to check and make sure you have 110 VAC across the double black and double white wires at the control board with the door switches activated. if you have the voltage, you'll need a new control board, no voltage would be a bad door switch or wiring issue. Here's some meter usage information should you need it [http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html] Good Luck and Thanks
Dishes don't get dried. Heating element tested ok. Doesn't seem like it is heating hot enough at end of the cycle and dishes are still wet.
Chris H. for Model Number mdb7100aww
Answer Hello Chris. You will need to test and see if the limiting thermostat 99001852 is bad on the unit. It should read closed for continuity. If it is good and the heater is good, you will need to replace the control board 99002824. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. Hope this helps. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html