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Member Since 03 Feb 2009
Offline Last Active Oct 13 2012 07:11 PM

Posts I've Made

In Topic: BOSCH Washing Machine WFMC3200UC/01 Not spinning, sometimes.

29 March 2009 - 09:48 PM

Sounds like what happened to me: http://applianceguru...&jump_to=119482

In Topic: Need sanity check for Bosch Nexxt 500 repair

10 March 2009 - 10:33 PM

I just wanted to post a few notes on this repair in case it may help someone else.

I ordered the motor control module from RepairClinic.com on Saturday afternoon. It was shipped that day and arrived earlier today (Tuesday). That was the best price I could find and I am very happy with their service.

This machine is fairly easy to work on. I just had to remove the back panel (18 TORX-20 screws), remove an additional T-20 screw that secures the control module housing to the rear edge, cut three nylon cable ties that held some wire bundles to the control module housing, and slide out the control module. You have to lift up on a plastic locking tab and slide the module towards the front of the machine, and then lift it up out of the slots. If I ever have to replace the belt or the motor, it looks like it will be a simple operation.

You have to open a hinged cover to remove four electrical plugs from the control module. The lower (3-wire) connector is a bit tricky to remove. You have to simultaneously press up on the upper tab of its jack and press down on the lower tab, and pull back on the plug. I took a picture so I wouldn't get the positions of the upper two plugs reversed when reinstalling.

I tested the motor winding resistances and all were equal at 2.9 ohms, which is a bit higher than the service manual indicated (1.8-2.1 ohms). The speed sensor measured about 265 ohms, again a bit higher than 180-220 ohms listed in the service manual.

I had to remove the three cable tie mounts from the old housing and place them on the new control module. You have to remove the housing from around the circuit board to do this, but it's not too complicated.

The new control module slid in and locked in place, and I re-secured the wires with three new nylon cable ties. I then replaced the control module mounting screw, the back panel and screws, and the water supply lines.

I then ran test program #3, which ran fine. I've done two loads so far, and they both ran without problem.

So in short, this was a straightforward and uneventful repair, and replacing the motor control module seems to have been the right (if expensive) thing to do. All I have to do now is get a better surge protector. In the mean time, I'll just keep it unplugged when I'm not using it.


In Topic: Need sanity check for Bosch Nexxt 500 repair

07 March 2009 - 07:58 AM

Thank you for the guidance. The resistances measure normal, so I'll go ahead and replace the motor control module and post again after I test it out.

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