When replacing my burnt out bulb, I negliected to unplug the microwave, and alas, blew a fuse in the house's fuse box. I have since replaced the bulb, but the light still doesnt work. I tested to see if electricity is event getting to the bulb outlet, which it is not. Is there an internal fuse box? How do I get to it? I did some slight exploration, but didnt want to dig to far without knowing what I am going after.
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Re: Under Hood Light, bulb is fine (brand new)
This is a problem with the control board, which we commonly repair for $32.50. This is caused by not disconnecting the microwave from the power line when removing or installing a bulb. Feel free to e-mail me at _ for more information or visit _ for full details.
There is definitely a fuse in the unit. It normally is behind the control panel. The control panel opens by removing just one or two screws and possibly lifting up slightly to unhook from cabinet -BUT UNPLUG UNIT BEFORE DOING ANYTHING.
Do not understand why changing light bulb would blow any fuse - unless you did something unusual.
Chris, I just had the same thing happen and am online trying to find a fix. I have taken the whole thing apart looking for a fuse and only found one that appears to be the "main". Did you find the "fix"?
Thanks so much!
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normally there is a glass fuse in the circuit where the power comes in
check that fuse/ replace if necessary
As silly as it sounds --turn the equipment of at the wall before you work on it as it might have been you that blew and not the fuse
When this happens, a lot of the time, it is because the the old bulb burnt up violently or it was unscrewed with the power still on to the unit and if the wires on the bottom of the bulb were twisted together, it probably blew a trace off of the back of the circuit board that supplies power to te bulbs. So either need to find someone to repair the circuit board or buy a new one if you can put it in, if not, need to call a servicer to replace it. But caution, thay are not cheap!!! Always unplug you microwave BEFORE replacing the bulbs!!!!!
Sounds like a power source issue from under the hood. Unplug or turn off all power and take a closer look in there,. alternatively - this may sound crazy, but are you certain both bulbs are working by testing in another fixture??
My Whirlpool/Roper microwave/hood combo has the same problem. I replaced the bulb twice, checked the bulb and it works, but not in the microwave. I wrote to Whirlpool asking about the problem. Haven't heard from them yet.
We see this a lot. The problem is on the control panel, which we regularly repair nationwide for $39.95 postpaid.
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.
This can often also affect the exhaust fan operation, too. The lights and fan can be inoperable or stuck on too.
Details of our service and critical safety information and disassembly information is at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk
We're happy to help and we appreciate your thoughtful rating of our answer.
I had the same problem. My Magic Chef, MCO153UBF Microwave had similar problems. The Magnatron, Cooling fan, Turn table and under hood lights were not working at all after hearing a pop sound under the control panel. Thought it was the fuse but the fuse was fine after testing and replacing. I checked the circuit breaker wired to my house and saw it had a break to my kitchen outlets so i flipped the switch to get back the kitchen outlets. Then I checked the microwaves Control Panel ( Printed Circuit Board) underneath and saw to traces were burnt. I soldered the two trace lines and the fixed the problem.
Yes, this is caused by not disconnecting the microwave from the power line when removing or installing a bulb or by the filaments shorting when the bulb blows.
This is a problem with the control panel assembly, which we repair nationwide for $39.95.
If you or a friend decide to send it to us, we have *critical* safety and disassembly info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk