Maytag over the range microwave rattles during cooking, how do remove appliance to tighten up what is loose?

Many factors at play here. Are you cooking on the range? Are you using the microwave? Is the light on?
There is very little current going to the touchpad and if there were a short in it the touch pad would not work. It is just heat from another source. Don't worry about it.

Make sure you tighten all the attachment screws that may have loosened during long term usage. Make sure the fan is running properly and not causing undue vibrations. Use WD 40 on the fan.

This is a indicator the magnetron has failed, "hear of the microwave oven"

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

does this happen when your cooking with the stove top, if so, then its causing the mircowave to be too hot.

This may sound a bit nuts, but remove the glass tray and support ring. Clean the wheels and ring. Also clean the glass and microwave surface where the wheels run. Any tiny bit of debris will stop the wheels from turning, and make a rattling noise.
If that doesn't help, you may need a new turntable motor.

YOU HAVE TO REMOVE THE MICOWAVE COVER THE LIGH IS JUST BE-HIND THE CLOCK

That would be my guess t possibly has shorted out.

Dave

In order to try to set your mind at ease I will have to explain the Basics on how a Microwave Oven Functions.
When a Microwave Oven is set to COOK ...START. It cooks at 100%. There is no lowering of the heat as with a Range ( Cook Top) Control. So in order to do the other things such as DEFROST, WARM, or anything other than 100% COOK. A COOK ON- COOK OFF system was utilized. To DEFROST, the Microve COOKS at 100% for 30% of the TIME, then IDLES for 70% of the TIME. COOK ON 30% of the TIME, COOK OFF 70% of the TIME = DEFROST This is why you can hear the CYCLE. More power is required during the ON CYCLE, thus the lower vibration. The Vibration occurs when the High Voltage Transformer is turned ON ( COOK ON).
The VIBRATION seems to have got louder with age. This is somewhat normal as there is a vibration from the High Voltage Transformer present every time the Microwave is used. screws and other metal parts seem to get loose with this vibration. There is no solution, unless you can tighten EVERY screw, nut, and bolt in the unit.
Sorry!

It could easily be a bad line fuse and/or line filter. To access you will need to unplug the unit and remove the outside case. Inside the unit, where the A/C power cord comes in, there should be a small circuit card (part #237068) located somewhere with a fuse mounted on it. This is your input line filter board with line fuse. Replace the fuse, first and see if this fixes your problem. This is a 20amp appliance fuse that you can purchase at any hardware store. Make sure you place the cover back on the unit BEFORE you plug it in. It is not safe to have this area of the microwave exposed with power applied. High potentials in the 4,000 volt range are present! If the fuse does not correct your problem, the circuit card runs about $26.00. Good luck and hope this fixes your problem.