20 Most Recent Bosch 700 Watts MEK7000 Concept Series Stand Mixer Questions & Answers

It could be the drive belts. There are three. One for the motor to the belt drive. one from belt drive to bowl mixer spindle. one from belt drive to mixer spindle. mine started to do the same thing. I ordered the belts from Bosch.

The safety Lock on the bowl hasn't released. You will see it in a tube where the lid lock is. When the lid it locked into place, it pushes a rod down into a hole in the base to operate the safety switch. You may be able to pull it up with needle nose pliers. https://www.google.com/search?q=how+a+food+processor+lid+safety+lock+works That is a funny looking machine, so none of what I wrote may apply! https://www.google.com/search?q=bosch+universal+kitchen+machine

It is a known issue with that Mixer. https://www.thefreshloaf.com/node/69164/bosch-universal-um3-too-much-bowl-wobble https://www.google.com/search?q=bosch+universal+bowl+wobbles ..

Check another appliance in the socket, if that works check the fuse

I could not find a free manual. The following are links to a manual for sale: http://www.appliancepartspros.com/bosch-use-care-manual-520562-ap2803795.html https://data.e-manual.eu/en/preview-manual-for-free-36898/mixer-bosch-msm-6680/page-1.html

test for switch or motor failure

the drive shaft bush is dry ( probably from dough getting up the shaft) have the unit serviced /repaired and properly lubricated using food grade lubricate

Spray vinegar into it vinegar kills all moulds

Sounds like you have burnt something out. It likely won't last long. Probably the motor is gone.It may burn out when you put it to real work. Good luck.

Look for a Bosch dealer in your area or find one on the internet