Question about KitchenAid KSM90 Ultra Power Series Stand Mixer

3 Answers

Mixer just won't turn on -speed control jammed

I am not sure why but all of a sudden, I can't turn the mixer on. It doesn't seem to be an electrical issue; the speed control switch just appears to be locked.
Thanks in advance for any help you can offer!

Posted by on

  • psh2008 Nov 08, 2008

    My speed control is also locked on OFF on my mixer.
    I took the cover off, to see the inner workings of the speed control lever and I couldn't see anything blocking the motion of it in any way. Prior to it locking into the OFF position, while operating it, I noticed that it would spring forward a little in to the 1st speed position, while I was trying to turn it off ! When it did this I thought, wow this is dangerous, so I would unplug it when I was done, because it would bounce back into 1st speed position after I tried to turn it off ! Then, eventually it locked in the OFF position. So I figure this has to be electrical, and something has to free the switch off the locked position in order for it to be normal again. I pulled the cover off, and checked all the electrical contacts, everything appears shiny and good - I pushed a little on the circuit board - it sits on a spring configuration and moves at an angle i figured, depending on the speed. Very primitive and old technology is my opinion - I didn't expect this. It just appears like I can't take enough parts off to really see whats' going on inside it. The service shop said to "bring it in". There's one shop 60 miles North and another about 60 miles West . What a hassle.


  • Anonymous Jan 09, 2009

    After a short fall, the speed switch is bent. Is there an easy way to fix this at home, or should I take it to a shop?

×

3 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Well, I half fixed it thus far anyway.
I got the speed lever freed up - just by jiggiling it back 'n forth, standing from behind with the mixer sitting upright on my counter. I was surprised when it just clicked free. With a tiny flashlight, I could see that the lever mechanism worked from a sharp angle to move the bar which pushes the circuit board back, (which is on springs) which lets the contacts on the circuit board close up, to run. Pull the lever back to off and the contacts separate, breaking the electrical current.

I sprayed some DW-40 lubricant on the little gear inside where the speed lever joins up, and it freed up even more - works very smoothly now, pushing the circuit board back 'n forth nicely.

But now when I plug it in, nothing happens. Lever works fine, but no spark.
Maybe I should not have used DW-40 ?
Maybe I should have used alcohol spray instead ? Or just plain air ?

I may have disturbed the electrical contacts or dirtied something ?
It's hard to tell.
I'm going to let this dry out a bit with the back cover off and see what happens in the morning.

I'm beginning to think this model was made in China or something.
These things never died so easily in my parents day.



Posted on Nov 09, 2008

  • Level 1:

    An expert who has achieved level 1.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 1 Answer

I just had the same problem and solved it. when the speed switch is moved from off to the first slow position, it allows 2 conacts to close on the switch mechanism at the back of the mixer, accessable by taking off the rear piece with one screw. as you face the back of the mixer with the back cover off, you will see the contacts on the inside right top of the switch mechanism. with the cord unplugged, work the control lever and you will see it open and close. mine got burned over time, probably from normal sparking, so i took a sharp knife and scraped off each contact and that did the trick. don't use sand paper or emory cloth, i am told, but you could probably use an automotive point file.

Posted on Jul 22, 2008

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 25 Answers

Unplug the appliance. Take it to a well ventilated area and spray some alcohol in the slot where the switch is while trying to move it. This must be done with the appliance unplugged and the appliance must be thourughly dry when you plug it in. Use canned air or if you have one a compressor.

Posted on Mar 26, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How to fix a kitchen aid mixer that does not turn off


The answered suggestion on this post might be able to help you:


Doesn actually turn off Mixer

Mar 07, 2015 | Food Mixers

1 Answer

250 watts k45ss classic stand mixer doesn't run


My first guess would be the speed control plate. It has three screws in an upside down triangular shape. The two screws on top control and adjust speeds 1 thru 6, and often times just one screw being out a 16th of a turn will shut the mixer off completely. I would venture that when you were removing the two stud bolts you moved the adjustment screws on the speed control plate. Remember that even a slight movement can shut down your mixer, take a phillips screwdriver and turn the top left screw one quarter turn while the machine is on, it can start on you so don't be shocked and jump with a loaded screwdriver in your hand at the back of an electrical device, stay calm, if no start then try the left screw a quarter turn, if it does not start go to a half turn on each screw, if still no start turn thr screws back to the start place and try the bottom screw a quarter turn left and right, if you do not start by now, then something is wrong in another place, go back to the brushes and take them out and check how you put them in, these are the two most common problems with a no start mixer. If this does not fix your problem or get the mixer to start please come back here with more info. If you motor raced in the first place then I would suspect the phase control board, but when it came back to normal speed it leades me away from the phase board. When the phse control board goes out the mixer only works at high speed. So please let us know so that we can help further.

Mar 28, 2013 | KitchenAid K45SS Classic Stand Mixer

1 Answer

Kitchenaid kp26m1xer won't turn on


If the mixer died completely and no noise at all comes from the machine you need one of three things.
1. New brushes2. new speed control switch3. a new motor.

The KP26 is a 6 quart mixer of the new design, post 2002, it is easy to work on and relatively inexpensive for parts if it turns out to be the motor that will be about $100.00, the speed control about 30.00, the brushes on this mixer cannot be replaced you have to install a new motor, sry about that. Hope this helps let us know. But first check that the electric outlet you are working from has not tripped the breaker on the circuit too. I know I know it's silly to say but check the outlet first before you spend a dime on anything.

Mar 11, 2013 | KitchenAid 32685 Mixer

1 Answer

Kitchenaid stand mixer won't start after replacing gear


you either forgot a retaining clip or a pin. because it sounds as though the mixer is frozen completely, it also sounds as though you know how to do a tear down so I would suggest a full tear down and clean to make sure that you do not have metal shavings from the old worn gear that is capable of freezing your mixer, unlikely but it can happen, next is the speed control plate that may be out of tune and needs some readjusting. Let me know if this helps.

Mar 02, 2013 | KitchenAid Food Mixers

1 Answer

Kitchenaid mixer motor quit , I dont really see any thing wrong with the brushes.


Obtain a copy of the Repair Part List for your model from Kitchenaid.com.
Download a Copy of the Kitchenaid Service manual.

http://www.kitchenaidparts.be/centers/servicemanual/mixer.pdf

First, you may want to adjust the mixer's speeds:

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

Second, if the mixer won't run:
Remove the Control Plate Assembly (36), the Phase Control Board (39)
and the motor Governor Assembly (35). Inspect for loose connections,
burnt or damaged components. If they seem to look OK, re-assemble
them and test the mixer. If the motor still won't run, then I might suspect
a defective Phase Control Board (39).

Aug 01, 2011 | KitchenAid K45SS Classic Stand Mixer

1 Answer

Mixer only moves at one speed


Referring to the following parts description:

http://shared.whirlpoolcorp.com/assets/pdfs/literature/Repair%20Part%20List%20-%208212369.pdf

The speed is controlled with a combination of the governor assembly #24 which mounts on the motor shaft, and the phase control board #27 which is mounted on the back of the mixer.

They operate in conjunction with item #25, the control plate assembly.

WARNING SHOCK HAZARD. FOLLOW THESE STEPS ONLY IF YOU ARE COMPETENT WORKING AROUND HOT ELECTRICAL COMPONENTS AND FOLLOW ALL SAFETY PRECAUTIONS!!!

Remove the rear cover screw #37 and the rear cover #36 and examine the governor when it is running. Also watch the speed control lever mechanism as you move it from off to the highest speed watching for binding etc.

Make sure that the spring #4 is attached to the bottom of the control plate #25.

If the governor appears to be opening and closing as the speed increases and the linkage is not binding then the problem is most likely the Phase Control Board, item #27.

Apr 19, 2010 | KitchenAid K45SS Classic Stand Mixer

1 Answer

My KitchenAid KSM90 will not turn off. All the speed settings seem to work, it just won't shut off. I have it open, but don't understand how the switch operates such that it turns the mixer off. The...


I determined that the switch that controls whether the mixer is on or off is controlled by a copper bar with a contact. The contact got fused to the copper bar, possibly due to a short. Since the contact got fused to the copper bar, the circuit was always connected, so the mixer was always on. The solution was to 1) unplug the mixer, and 2) take a screw driver and gently pry the contact away from the copper bar. When the mixer is in the off position, the copper bar and contact are no longer in contact. When the mixer is on, the copper bar and contact make contact. My mixer now works just fine. Yea!

Jan 28, 2010 | KitchenAid KSM90 Ultra Power Series Stand...

1 Answer

The speed lever does not move


Hi, JJBSKISAIL. From the symptom you described it appears that the speed control assembly linkage has jammed inside your mixer head, for what ever reason. Most likely something’s broken inside your mixer to lock it into position. It would be better to determine the root cause of your speed control knob’s obstinacy.
The inspection and troubleshooting of the inside of your mixer is a DITY capability, particularly if your mixer is out of warranty. Just be sure to have the Parts List manual on hand. If you're lacking one, you can download a PDF version from the KA website: http://www.kitchenaid.com/flash.cmd?/#/page/home. Click on Customer Care>Locate Manuals & Guides> Enter the 6 character model number, in your case use K45SSW, and select the file listed under Parts List (1), K45SSWH0.pdf (341.41 KB). Check to ensure it matches your mixer model.
Turn to pages 6 & 7, titled: Motor And Control Parts, which provides an exploded view for the disassembly and reassembly of your mixer’s electrical components, along with all the parts. You’ll want to focus on part #s 2, 3, 4, 5, and 6, which is the speed control assembly. Check to see if something isn’t blocking the movement of #3. You should be able to determine if something has broken. If something has broken, you can order replacement parts and install them yourself.
As far as parts go, here are four potential vendors in no particular order: RepairClinic.com; mendingshed.com; searspartsdirect.com; partstore.com. Prices for the same part can vary widely between vendors, so do your comparison shopping.
While your mixer is apart it would be ideal to check for any other unseemly wear and tear on the gears, etc. It can be messy but quite gratifying to diagnose and repair your mixer yourself.
Here are some links to several excellent websites that detail the disassembling/reassembly of a KA Mixer.
Between these three websites and their excellent pictures and descriptions and your Parts List manual, you should now be able to completely disassemble and reassemble your mixer.
Good luck and have fun. I hope this helps. Howard, Burke, VA
If this solution has helped you, please rate it, thanks! - hslincoln

Nov 20, 2009 | KitchenAid K45SS Classic Stand Mixer

2 Answers

Same speed


I believe the speed control needs to be replaced. It controls how much electricity is sent to the motor.

Jan 28, 2008 | Hobart A200 Stand Mixer

2 Answers

Mixer works at high speed only


You might have someone repair it for you; here is a place that charges a flat fee of $69.95 and thats including the return shipping. Check 'em out:http://www.marbeck.com/repair_mixer_kitchenaid.html The speed controller board sounds like the right direction but it hard to know if that is the issue until you install a new part. This is a known issue as far as I have heard around the internet. You might give KA a call and see if they can help; all they can say is no. I have heard they revised the part to fix the problem; my brother had a couple of boards replaced on his pro model and now it seems fine. Good luck!

Jun 22, 2007 | KitchenAid KP26M1X Stand Mixer

Not finding what you are looking for?
KitchenAid KSM90 Ultra Power Series Stand Mixer Logo

316 people viewed this question

Ask a Question

Usually answered in minutes!

Top KitchenAid Food Mixers Experts

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Custom Exchange
Custom Exchange

Level 3 Expert

397 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21927 Answers

Are you a KitchenAid Food Mixer Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...