2005 model suddenly would not shut of unless door open, then control panel flashes- digital display scrambled. I took cover off and when the problem happens, I can hear a relay clicking on the control board. Unit light and fan cycling on/off by themselves. I tried plugging/unplugging, then banged on the top of unit a few times.

After being plugged in a while it started working. I then unplugged it for the evening. Then problem reoccurred when re-plugged in. After a few minutes, it is working again, as if a part needed to warm up. If anyone has experienced this before, it would be great to hear about it.

Thanks