Tappan Convection/Microwave Combo- Fixed

[94-Newmar]

We have a Tappan combination convection/microwave mounted over the 4 burner stove. This unit has the underhood ventilation to the outside and lights.

We noticed that it simply stopped working. No display, no lights, no click, buzz or hum - It acted as if it was unplugged. We plugged a hair dryer into the same outlet to make sure we had power at the outlet.

Pulled the unit down, removed the cover and found a simple 1/4 x 1 1/4 ceramic fuse mounted to the main circuit board. Being ceramic you can't see the filament inside to determine if it's blown or not. We pulled the fuse, checked continuity with a meter and sure enough that fuse was blown. Went to radio shack and bought a 4-pack for a whopping $2.99 installed a new one and the unit is working again! Ours uses a 15amp 250vac rated fuse, yours may be different, it's size/rating is listed right on the fuse body itself.. Hopefully this info will help someone in the future.

15A 250V Ceramic Fuse for Microwave Ovens (4-Pack) - RadioShack.com

[George Z]

Good info, thanks for sharing

[davecampbell]

caused by a defective, or about to be defective, door interlock switch, or, occasionally, an old fuse. Slamming the door sometimes blows fuses when the switches bounce and short the AC line to ground.

Grab the door handle and yank up and down on it and see if it blows another one...