I have the MC1385 and after using it about 5 times the power button stopped working and I noticed a burning plastic smell. I opened it up and the rocker switch was fried/melted!
If customer service does not assist you, go buy a round 3 prong illuminated rocker switch and replace it. It should work.
It’s irritating to spend a lot of money on a product that seems to have this manufacturing defect. A recall should have been made, but that would have been very expensive for the retailer.