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there is flaking paint on the face behind the door

Hi @alancluxton , You can but do not use any oil based paint as it gets hot in a microwave and the paint might tend to bubble. Also be careful if using a spray can paint, that the paint doesn’t overspray and get get into any holes etc and clog them up, mask them over etc There are paints specifically made for microwave ovens. I haven’t tried it myself but here is one just to give you an idea of the cost etc. Just search for microwave oven paint