Appliance Noise Level

take it in to an appliance repair shop for a proper diagnosis and quote but it is probably not worth repairing ( armature and brushes )

Counter top appliance number for Kitchen Aid is 1-800-541-6390 M-F 8 - 8 EDT and Sat 12 - 5 p.m. they should be able to help you

Hi - I assume you mean to say that the motor turns on, runs in all speeds but no power is being transferred to the planetary head and beaters?

If this was preceeded by some intermittent run conditions like occasionally skipping beaters and some louder than normal or different run noise then it's likely that the nylon Worm Gear has lost teeth and is no longer making contact with the motor gear. It is part of an assembly which is directly coupled to the motor. Disassembly is required to get at this part and some mechanical skill to replace it. If the mixer's a few years old and/or gets a lot of use, the gear grease should be replaced too. For the gears and other parts, including the grease - check out http://www.goodmans.net/get_dept_933.htm They seem to have just about every part needed and fair pricing. Appliance Parts Pros is another source of parts and diagrams. Warning - mixer disassembly is a medium complexity task and could ruin your day...

Good luck!

DZII

KAY – You don’t mention how long you’ve had your mixer or how intensely you use it, which would be helpful in assessing your question. Our first KA mixer we got in May 1989, seemed ‘whisper’ quiet compared to the replacement 6 qt Pro mixer our children got SWMBO for Christmas in 2006. The new mixer was so noisy that my wife called Kitchenaid to complain. The wonderful KA ‘Helpers’ explained that KA had changed to making all metal gears in their mixer transmissions as opposed to having one plastic gear (intended to fail instead of burning the motor out). That change from plastic to metal is then main reason your KA mixer seems to be much louder. You should be able to judge if your noise level has increased or stays the same during normal use. Since you stated that you don’t notice any overheating of the mixer I would say that the noise level is appropriate and wouldn’t be overly concerned at this point. That being said, if you hear a change in the noise level – usually louder, it could be indicative of mechanical issues in the transmission, which is what finally happened our mixer. One of the gear teeth broke and the agitator froze up. But that is another story…
I hope this helps. Good luck! Howard – Burke, VA
If this solution has helped you, please rate it, thanks!.hslincoln

kazikeva... It's not very clear what stopped working; the motor, the mixer, what, in particular? You don't tell me how old your mixer is and how much it's been used, all relevant towards pointing me to the problem(s). The more detail you can provide, the better my answer will be towards helping solve your problem. Are you getting any sound when you hit the start knob, or is it just dead silence? If you have dead silence, then it is definitely a power issue, which means it a couple of things could be conspiring to make your mixer not run. It may be a bad controller assembly (the speed knob), or it could be the motor, but either way it's something you can check yourself. I'd start with the controller assembly and inspect that first. It's possible a connection has come loose. Unfortunately whole controller assembly is on a little PC board filled with resistors, capacitors and diodes, which was not meant to be 'home fixed'. My 'expertise' ends at being able to recognize a resistor from a capacitor, but I don't get much deeper than that. A local small appliance repair shop should be able to determine if the controller assembly is functioning properly or not. The next possibility would be with the motor itself, but electric motors are pretty simple mechanisms and generally don't fail. If you?re getting 'noise' from the motor but the mixer won't turn, then you've had a mechanical failure in the transmission box or planetary gear assembly of your mixer. The inspection and troubleshooting of the transmission is a DITY capability, particularly if your mixer is out of warranty. Just be sure to have the correct Part List manual around when you start to disassemble your mixer. You want Part No. 8212257 for your mixer, which you can download from KA customer service. I hope this helps! Howard, Burke, VA

Robbie. Are you getting any sound when you hit to start knob, or is it just dead silence? If you have dead silence, then it is definitely a power issue, which means it a couple of things could be conspiring to make your mixer not run. It may be a bad controller assembly (the speed knob), or it could be the motor, but either way it's something you can check yourself.
I'd start with the controller assembly and inspect that first. It's possible a connection has come loose. Unfortunately whole controller assembly is on a little PC board filled with resistors, capacitors and diodes, which was not meant to be 'home fixed'. My 'expertise' ends at being able to recognize a resistor from a capacitor, but I don't get much deeper than that. A local small appliance repair shop should be able to determine if the controller assembly is functioning properly or not.
The next possibility would be with the motor itself, but electric motors are pretty simple mechanisms and generally don't fail.
If your getting 'noise' from the motor but the mixer won't turn, then you've had a mechanical failure in the transmission box or planetary gear assembly of your mixer. The inspection and troubleshooting of the transmission is a DITY capability, particularly if your mixer is out of warranty. Just be sure to have the correct Part List manual around when you start to disassemble your mixer. You want Part No. 8212278 Rev D for your mixer, which you can download from KA customer service.
I hope this helps! Howard, Burke, VA

Ask at the following link, I found there most of parts for DSM7 mixer.

http://www.forumappliances.com/

Good Luck

its possible that you got a lemon off the factory line or they forgot to put grease into the transmission case.is there a warranty on it?if so take it back.i work for hobart which sold kitchen aid some years ago,if that mixer is less than a year old as stated,take it back or verbally speak to a kitchen aid rep. and tell them your situation.i really belive you should be able to get a replacement as long as you havent overloaded the unit or caused damage.let me know.

There should be a overload breaker on the bottom of the motor, tilt it back and look for a little red (probably) button.  other than that, there shouldn't be anything else... if it doesn't  work, it might be defective... Don't give up hope though, those mixers, (used to be Rival, and made by Kenwood in europe) are *SOO* much better than Kitchenaid, it's not even funny *Grin* and good luck.