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
week.
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.
Sometimes this will also
affect the exhaust fan operation, too. The lights and fan can be
inoperable or stuck on too.
In your case, it may just be a shorted dimming diode, a black diode usually located between the light relay and the connector.
(Not to be mistaken for the tinier red-bodied diode on the other side of the relay that protects the relay coil).
If it is shorted, you will have bright lights in both the bright and dim settings.
In case you or someone you know has the tools and experience to desolder and solder small components, the replacement rectifier diode is not critical and can be any of these:
1N4001, 1N4002, 1N4003, 1N4004, 1N4005, 1N4006, 1N4007, NTE116, or NTE125 some of which are available form Radio Shack.
At
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.
There
should be a "mini-manual" (tech sheet) hidden inside the unit
behind the
control panel or hidden on the left side behind the grille, which is
very helpful when troubleshooting, testing, and locating components.Feel free to contact me directly (and please remind me of your
full model number) for more information & help.
We're
happy to help you with free advice and we'd appreciate your
thoughtful rating of our answer.
William E. Miller
[email protected]
http://www.microwavedisplay.com
