Question about KitchenAid KSM90 Ultra Power Series Stand Mixer

1 Answer

Was working few years but doesn't start at all.It being a month without using it, then trying to turn it on but nothing.No issues before. Watched DIY videos just replaced its Phase board, nothing

One video that made replacing its Phase Board from eReplacementParts.com, also suggested replacing Control Board inside the mixer. Should I order one? What else should I check before? Help please!!!

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  • KitchenAid Master
  • 1,361 Answers

You really need to get a Multi meter and follow the power, you have replaced the phase board so we can probably discount it being that.
First check that the switch contacts behind the black control board are really touching when you move the speed control lever to turn the mixer on.
Next the cable, do you have continuity from the wall plug to the control board on phase & neutral, (Check green earth wire as well for the sake of safety) that will be the black wire and the white wire on the 2 lower plug in contacts on the black control board at the back.
Next remove the carbon brushes, do they have reasonable length and most importantly are they fitted correctly with the corner key aligned with the blocker at the bottom of the brush holder.
Next with brushes out check for field winding continuity. On the other side of that black control board to where the power comes in there will be a red wire and a white wire that disappear into the motor housing. One of the wires will have a circuit to one of the brass brush holders and the other wire will have a circuit to the other brush holder. The resistance of both of those circuits should be pretty much identical.
After you have done those tests you should begin to have a clue as to where the problem lies.

Posted on Feb 18, 2015

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6 Suggested Answers

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6ya staff

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Posted on Jan 02, 2017

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Anonymous

  • 9 Answers

SOURCE: mixer speed settings

It could be the phase control, or it could be that the governor assembly or associated spring is missing or malfunctioning.

Posted on Mar 25, 2008

jack arons

  • 44 Answers

SOURCE: mixer won't start

your problem sounds like the thermister is burnt out.

Posted on Dec 10, 2008

Appliance engineer

  • 162 Answers

SOURCE: Hello, my Kitchenaid stand mixer

Check that the brushes are the right way round. They will go in the hole in four positions, but only one is right. Use a torch to check inside the hole. Also check the fuse.

Posted on Jan 30, 2010

Testimonial: "It worked !!!!, elated that didn't have to disassemble entire mixer to find the problem. A very big thank you Fixya738."

Andy Turner

  • 910 Answers

SOURCE: I replaced the control plate assembly and the

Pages 19 & 20 of the Service Manual below detail how to adjust the speed with and without tool.

http://lib.store.yahoo.net/lib/mendingshed/kitchenaidservicemanual.pdf

Posted on Jun 13, 2011

Thao Nguyen

  • 153 Answers

SOURCE: I could not regulate the

The K5SS is very similar to the 5-QT Artisan KSM150.
You need to adjust the mixer speeds. Obtain a copy of the K5SS Repair Part List from Kitchenaid.com. Remove the screw holding the End Cover and locate the three screws from the Control Plate. All three (2 top left and right, and 1 bottom) must all be adjusted. 1. Loosen the lock nuts enough & Turn the 2 top screws clockwise until they cannot be turned
anymore. Leave the bottom screw alone for now.
2. Use a dab of white paint or paper whiteout to mark the positions of the Phillips screws.
3. Plug in your mixer and Set the speed selector to "Stir".
4. Turn each top screw One full turn couterclockwise (alternating between Left and Right)
Keep making one full turn at the time (for both left and right) until the motor starts running.
5. Put your hand near the Agitator shaft and allow it to brush your finger slightly. Use your
watch or clock and start counting the number of times the shaft touches your finger in
60 seconds. The correct count should be 60 RPM (Rounds Per Minute). If it is less
or more than 60, give each screw 1/4 turn counterclockwise or clockwise and start counting
again. Now tighten both lock nuts.
6. Set the speed selector to "6" and turn the bottom screw either clockwise or counterclockwise
to achieve a speed of 180 RPM.

For your reference, the planetary RPM's for the 5-qt. tilt-head Artisan Stand Mixer are as follows:
Stir speed - 60
Speed 2 - 95
Speed 4 - 135
Speed 6 - 180
Speed 8 - 225
Speed 10 - 280


Posted on Jul 04, 2011

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