CASO MCG 25 Chef Microwave with Grill and Hot Air (7)

Sell CASO MCG 25 chef Microwelle with Grill and HeiluftZustand - used, visuall ver good and clean (see photos), Microwelle, Grill and Heiluft work, but the device has a problem with control. Sometimes it works after initialiation normall, but other times it goes suddenl "verrckt," starts to piep constantl, and the numbers on the displa start to change on their own. Have no idea what it is, thus I am selling the device as defective. Sale of individual components (Drehte)