How much oil and popcorn kernels to use in gold medal machine

do you put a half a teaspoon of oil in first before the corn kernels
other than that have the unit checked by an electrical appliance shop for problem thermostat or heating element

Order a new switch from Gold Medal. The number is 42532

A kettle not heating is either a switch, kettle wires, thermostat, or kettle heater.

Check that the kettle is plugged in tight, notice if the switch lights up when switched, then contact your local gold medal dealer for repairs. It is always cheaper to repair a gold medal kettle than replace.
http://www.gmpopcorn.com/domestic-dealers.cfm

did you add a little bit of oil

That model is a 6oz popcorn machine.

3/4 cup popcorn kernels (6oz)
slight 1/4 cup oil (1.6oz-a quarter cup is 2 oz.)
1 teaspoon popcorn salt.

All popcorn machines use a 3or4:1 corn to oil ratio. More specifically the model 2085 is a 6 oz popper.

6oz. popcorn (3/4 cup)
1.6 - 2oz oil (1/4 cup)
1-2 tsp popcorn salt

Generally, you want 3 oz. of corn to one 1oz of oil. The amount of corn you can put in the kettle depends on the size of the kettle. So take the kettle size, (I think that machine is an 8 oz popper) and divide 8 by three to get 2.66 oz. (about a third of a cup) of oil needed. So you would use 1 cup of corn, and a third cup of oil.

http://www.concessionpalace.com/concession-tutorials/P-60_60_Special_Uncle_Walts-1866_2085_2086_2656-popcorn-machines.pdf

There are many ways that this could have caused your problem! Too much popcorn kernels put into bucket!....somthing in the bucket that is causing it too stick! (I would never put salt or any other seasoning in the maker untill popcorn has dropped) anso the heat from the maker itself can cause warping of the metal parts inside over time! I cant tell you what parts to order because i dont know the model number,But If you have all the pats somone of little skill should be able to fix it for you by bending it back into place and putting it back together and trying it! If not come back with the model # and we can help with the parts!
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THANK YOU!

The problem you are having is the thermostat inside the kettle is getting weak these can be ordered from Star Manufacturing or a concessions supply place that does repairs Also Gold Medal Product has a similar thermostat that will work in your kettle pt# 47082 Just a FYI