Kenmore model 721 62644200. Everything works perfectly except the internal light. Bulb looks good and tests good using an ohm meter. Might the bulb still be bad? Or is the problem more complex? Dennis Morelli
I found that by tapping the control panel, the internal light would flash. I opened the control panel and started tapping on circuit board components until I found one that seemed to consistently make the light flash. I resoldered the pins on the loose component and this completely solved the problem.
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Possibly the internal fuse. Unplug unit, remove all case screws on the back of the micro. Slide the case toward the back and remove. Look for a glass tube type fuse, simular to automotive fuses of the past. It should be located near the controls. If bad, the internal wire will be broken or burned, I have been able to find replacements at Radio Shack. Take the old one with you. If the fuse is good, I'm sorry, it's beyond my microwave knowledge level.
I would not normally expect a burned out light to trip a breaker.
You may have a blown fuse. I suspect the fuse you see is to protect the oven. If you popped a breaker, you may have blown a fuse. I'd be looking for a short somewhere, maybe in the wire that powers the light, maybe in the hardwire that supplies the oven.
Make sure you turn the power off before you go poking around. And, above all, avoid the silver can inside, it IS lethal.
When the microwave sounds okay, but there's no heat, one of the internal door switches, the high voltage circuitry, or the circuit board may have a problem. To resolve this problem, you need the assistance of a qualified appliance repair technician.
We see (and repair) this
a lot. The problem is on the control panel, which
we regularly repair nationwide by mail for $39.95 postpaid in about a
our Web site, you can get details of our service, plus we have a video
available showing how to remove a typical
over the range control panel assembly in under 5 minutes.
This light failure often
occurs when a bulb goes out and the filament
shorts, or when the bulbs are removed or installed without first
unplugging the oven from the power line. Either can cause such a
failure on the controller.
The lights fan can be
inoperable or stuck on or no bright, too. Sometimes this will similarly
affect the exhaust fan operation, too.
Feel free to contact me directly (and please remind me of your
full model number from the tag on the unit) for more information & help.
happy to help you with free advice and we'd appreciate your thoughtful
rating of our answer.
A lot of those you can replace the bulb without taking it down. There should be screws at the top that lossen up the vent in the front. Remove the vent, might have to open the door and slide it to the left (a little latch) then you should see a filter that just comes out and behind that is the bulb. I would try that before taking it down Forgot to mention that in the other e-mail.
I had the same problem! I was soooo frustrated! But, when my brother came to town, he took off the grill on the top of the micro hood, took out a few more screws, a plastic screen, another screw in the metal cover for the light and then reached in with his fingers to pull out the light bulb, we replaced it, then re-assembled it. It did take us about 30 minutes to do the job and you will need a phillips screwdriver, and a phillips screwdriver drill bit thing, but we were able to do it. I love having the light in the microhood again.