I recently received a KA Model 620 Pro Mixer from my mother. The 0-10 speed selection only works at the highest speed regardless of the speed selection. KA gave my mom a new mixer when she called to report this problem. KA states this is a common problem with the model. Okay, I was told the issue is a defective speed control board/selector knob. Since the machine was free to me, I opened the mixer to examine the speed control circuit board & wires. There doesn't seem to be any damage. After some effort, I've located a new "speed control" and intend to install the new board/selector knob. I guess my major question is, Am I headed in the right direction or is this mixer a lost cause? The nearest repair facility is over 300 miles away & Kitchen Aid seems less than enthusiastic about dealing with the mixer as I think they will discontinue the 620 model. Thanks!
Guys, I'm not sure if this will solve your problem. I have a Kitchenaid 575 watt professional 6 and I was having a similar problem. I fixed mine by making sure that Hall effect sensor was completed seated on the control board. I think mine loosened from the use and vibrations. Once I reseated the sensors it worked like new. I'm not sure if your model has a Hall effect sensor, but I would start there. One final thing. If your model does have a hall sensor, make sure it securely connected to the control board. Also, make sure the sensor is properly oriented on the board. My control board has three small prongs which the sensor attaches to. The sensor can attach facing up or facing down. If not sure, try it both directions. It took me a little trial and error to discover the correct orientation but my mixer works like new now.
Posted on Dec 30, 2008
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!
Posted on Aug 19, 2007
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James, have you managed to get your mixer back working properly yet?
Just before Christmas (perfect timing with all the pies, bread and cakes to be baked!) my Pro 620 did exactly the same thing! I thought I was going mad, and very nearly did so after having to mix everything by hand :-)
So now at least I have an idea of what the problem may be ...... I've looked under the hood and checked all
the wires and contacts, and everything looks fine, so will assume this is the solution nonetheless. I'll obtain a replacement Speed Controller and and see how we go. I guess with the 'premium' cost of a 620 mixer I had hoped it may have been better tested and free of these issues, as I live outside of US and cannot simply return it under Warranty. Them's are breaks :-/
This same problem with the speed control is happening to my mixer! It is Christmas baking time right now and it started having this problem as I was mixing gingerbread for a big gingerbread house party I throw. I can't tell you how disappointed I am with this product, and how disappointed I am with Kitchenaid in general. Yes, my machine is off warrantee, but if this is a known problem, they should still stand behind their product and replace the part. I stood behind Kitchenaid to replace my Artisan mixer with the Pro line, before this I always sang the praises of Kitchenaid. I paid around $400 for this machine and will now pay an estimated $120 to fix it. I am now wishing I went with another brand.
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