I have an old universal mixer with the green on/off knob. I had enough dough for four loaves loaded into it. I let it run a couple of minutes longer than usual. When I went to turn it off it was giving off a burning odor and was quite warm. I let it cool back down and now it no longer starts up, no sounds, absolutely nothing.

I do not know a lot about this machine. I am a DIY fix anything. It sounds like one of the mounting points on either the motor or the gearing gave way. Regardless it is new, send it back & have it fixed or replaced. Sorry, I know that is not what you wanted to hear, but is safest considering your investment.

Type not found at Kitchenaid. 5-Qt. Stainless Steel Bowl with Comfortable Handle

5-Qt. stainless steel bowl with comfortable handle offers enough capacity to mix dough for 9 dozen cookies, 4 loaves of bread or 7 pounds of mashed potatoes in a single batch. The bowl is also dishwasher-safe for quick and easy cleanup.

To give the mixer strength it has planetary gears. Something may be wrong in the gear section

Your guess is correct. Get it cheap on Ebay.

First of all, I want to say that it is common for people to overload the A200 mixer when mixing dough. The owner's manual gives an extensive chart for various substances typical of what people may mix. Depending on the consistency of the dough, the maximum batch size varies, but as an example: 9 lbs. max with 40% absorption ratio thin pizza dough, 1st gear only, 5 minutes maximum mix time. I remember this particular batch size/specification because as a technician who works on these mixers frequently, I had a customer attempting to mix 20+ lbs. of that 40% pizza dough for much more than 5 minutes and didn't understand why the mixer would stall and why his mixer was so hot he could nearly cook eggs on it's transmission case. So, a word of caution (9 lbs. at 40% A.R. is approx. 7 lbs. flour, plus the water) about overloading these. If used to mix reasonable batches, they are excellent mixers and will last a lifetime (I regularly service 40-50 year old A200 model mixers that run very well).

If you don't hear any grinding when it's stalled (which would indicated stripped gears, damaged keys, etc. in the transmission) I would say you are overloading it. Many people want to say the motor is weak when the mixer stalls, but unless the motor has been repeatedly and severely overheated to the point of shorting some of the motor's windings, that's not the case. I suggest finding the recommended capacity chart from Hobart and abiding by it and you'll love your new mixer for years.

Your mixer is easily able to handle the kneading of bread dough. Please advise:

9 cups of all purpose white flour, maximum.

6 cups of specialty flour, maximum. This is any flour besides all purpose white.

Bread doughs are only to be needed on speed 2, and never for longer than 7 minutes.

This is all stated in the Use and Care guide for the mixer itself. If these guidelines are not followed, it may lead to a product failure.

IT NEEDS TO PROOF LONGER

the company jumped right in and helped me out. impressive.

Force and a torch is your path.

First cut a block of wood that is of a length that is long enough to go from the column to the attachment portion of the planetary. (The block protects the gears from the force.)

Look at the rotation of the hook, you're going to twist it the opposite direction. Above the hook, loop a strand of a wet towel. While keeping the towel damp, not wet, torch the **** out of the hook. I recommend "mapp" gas. Heat it for about 90 seconds to to 2 minutes. The old dough stuck inside will burn off. You should get some black smoke. Use the block of wood, between the attachment portion of the planetary and the column, to resist the twist of the hook. If the wood is properly placed to absorb the load --- dampen towel, torch, block, TWIST. If you use a wrench -- be cautious. Good luck -- Mike

It sounds like the switch to me.mixers last awhile as long as there not overloaded.The brushes in the motor also go bad but i think the switch is your problem.Goto home depot/lowes and take the switch with you,dont forget to mark the wires.If they cant help you goto graingers (its a electrical/plumbing wharehouse).let me know,you can use an universal switch if the one you cant find isnt availiable.