Hi my GE Profile Spacemaker XL1800 started off making noise from the vent area while heating food about two months ago. Now when I'm heating something it turns off after couple of minutes. Then comes back on after 10 - 15 minutes. I have to then key in date. Seems that it's overheating. Also seems that when the microwave is on the fan is not on. I thought that when the microwave is on the Automatic fan should right away kick in? Also I noticed if I press the vent fan button it works manually? any ideas on what it might be. I ordered a magnetron from GE which was under warranty they will be sending to me soon. But I'm thinking maybe the automatic fan to cool unit off might not be coming on. When is suppose to come on? Help
any ideas as I don't know what I'm talking about being I'm not a technician.