There is a class action law suit ongoing on this issue, you may want to join it:
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this paint peeling issue is not merely cosmetic, it could pose health and/or safety hazards. When the paint peels off the interior of the unit, it cannot only fall onto food being heated or cooked in the microwave, it also exposes the metal underneath. The exposure of metal can result in a phenomenon known as “arcing.” Arcing occurs when exposed metal on the interior of the microwave sparks or flashes, a potential fire hazard.
There is a class action law suit ongoing on this issue, you may want to join it:
https://kohnswift.com/2015/10/05/ksg-investigates-ge-microwave-paint-peel-class-action/