KitchenAid KEHC379J Interlock Repair in Built-In Ovens

The KEHC379J, with the KEHC379JBT and KEHC379JSS finishes, is a built-in oven with a keypad, and it is now discontinued. It belongs with our oven work and is handled with careful attention to its door, because the door controls whether heating starts.
When the light and fan run but nothing heats, the interlock switches are the first suspects. They sense that the door is shut, and a damaged seal face or bent latch can confuse them. We test each switch and inspect the sealing surface before calling a part bad.
Slow, uneven heating over time can point to a magnetron wearing out, which we confirm by testing. The price is quoted in writing before we start, and we warrant the work for 30 days.
The door interlock is the usual cause, since it must confirm the door is closed. We test each switch and check the door seal face for damage that could prevent it from engaging.
Worn legends mean the keypad surface has rubbed away. We check whether the keys still work and replace the keypad if the panel is unusable.
A magnetron near the end of its life heats slowly and unevenly. We test its output with the proper instruments before recommending a replacement, and we rule out the door interlock first because it is the simpler fix.
Book in about a minute, or call the desk. Same-day windows inside the Loop on most days, next-day across the rest of Houston.