Question about KitchenAid KP2671 Professional 6 Series Stand Mixer

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My kitchenaid professional mixer does not work, tried replacing carbon brushes with no luck, obviously tried new fuse as well...nothing happens when switch is turned on, faulty switch?

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It's doubtful that the switch is at fault but either the field or the armature winding could be open. These are fairly easy to check once the innards are accessible, with any multimeter and a little understanding/experience.
I don't know how speed selection and regulation is done in that mixer but it may be electronic (as opposed to earlier electromechanical governors) and checking that section requires a little bit of knowledge about the components used.
When you replaced the brushes, did you notice anything about the surface they contact? The segments are made of copper and should appear shiny where the brushes contact, not discolored or burned-appearing. If they show signs of heat or charring, this could mean that the field windings are damaged. 

Posted on Oct 10, 2008

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Checkt he switch and the motor contact. you might have too much carbon.
how old is the mixer?? it might be time to get a new one???

Posted on Oct 10, 2008


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Make sure that the carbon brushes are not worn out or if you have already had them out make sure that they have been put back in properly. There is one corner ground off each brush that needs to line up with a blocking corner in the brush holder. Then get your multi meter out and check the unplugged main cable for continuity to the speed control panel. Then check each half of the field assembly for continuity from the speed control plate to a brush holder. Check you have no broken wires to the speed control plate. Check that the switch on the speed control plate is functioning. If all that tests OK I'd replace the phase board, it's worth not much and worth a shot.

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Obtain a copy of the Repair Part List for your model from
Download a Copy of the Kitchenaid Service manual.
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I have heard similar problems when the mixer has been transported. It usually happens if the mixer is transported on its side. If there was any burned flour on the brushes the jostling of the mixer can cuse it to get between the brushes and the armature.

So check the brushes. They get caked up with burned flour. Remove the brush caps and pull the brushes out by their springs, being VERY careful to note the position of them since they only go back in one way. Measure the free length of the spring before pulling it out. It is critical that you write down the length sticking out with very slight pressure on it so that it is seated against the armature when you measure.

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Hi. Before you get too far, call kitchenaid parts to find out if they still have parts for your mixer. They no longer show a parts list for the KSM90 so your mixer may end up in the trash.

Go to and select the Kitchenaid products button then select Kitchenaid mixer parts. Near the top of the page locate the button for the free kitchenaid service manual. Download the manual and read about the disassembly and reassembly of your mixer.

This manual does not cover your mixer but is a usefull tool for working on any mixer. Good luck with it.

If this solution has assisted you, please rate it. ricardok45

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