We pulled out the fog machine this year for Halloween. The machine worked fine at first producing a lot of smoke. The kids started complaining about no smoke. After some investigation we found the GFI tripped. We reset that but no heat. We've replaced the fuse but no heat. The power light comes on but the unit is not getting hot and no smoke is produced. I've read some posting here and a few on the net. There are references to a circuit and some other heat related unit? I've taken off the hood but I'm not sure what's what. Any suggestions for testing or finding the right componenet would be apprecaited.