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if this is a standard edison base bulb try this fix. make sure power is off to oven, remove bulb, find the small tang in the base that contacts the bulbs center base and using needle nose pliers bend it up slightly, install new bulb. let us know how this works for you:)
You know how when you turn on a regular light bulb and it burns out with a bright flash? What happens is that when the filament burns out, it breaks and bounces back and hits the other electrical post and basically shorts out causing that bright flash. Sometimes, when 1 of the light bulbs in the microwave burned out, it shorted out, and caused the circuit-board trace to burn up. (This is not just conjecture; I've seen it.) If that's the case, then you would have to replace the main control circuit board. A rather expensive repair for no lights. BUT BEFORE YOU DO THAT, get an ohmmeter and check your new light light bulbs and make sure they are really good. Also, if you can, get a bright flashlight and check the light bulb sockets in the microwave (unplug it first). Check for possible corrosion or signs of arcing on the center electrode of the socket. If that's the problem, you might be able to use a small screwdriver to scrape off the corrosion of the socket (make absolutely sure you have your microwave oven unplugged before you do that!).
was the fan working before you replaced the bulbs? Did you check the old bulbs ie filaments broken....if two bulbs stopped working at the same time probability suggests that the problem was not the bulbs, especially since the breaker fired when you put in new bulbs. Could be a short inside ...if you are not brave enough to take it apart and inspect better you take to be looked at ...better a fried microwave than a fried you...
i know this is going to make no sense . but in my samsung service cd it is in BOLD PRINT YOU MUST DISCONECT POWER BEFORE REPLACEING BULBS , OR DAMAGE TO TIMER WILL RESULT ! the first time you changed them did you disconect power ? if not , your board might be toast , $$$$$$$$$
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
Your Control Key Pad is a circuit with each function and button a switch. The pad on your TV Remote, and Telephone is no different. The Key Pad is failing, It will only get worse. Determine if you can replace the Touch (Key) Pad. Not the Control Circuit, just the Touch Pad. Sometimes you can get it seperate. It connects by a Flex Cable to the Control Circuit.
This is a problem with the control panel assembly, which we repair nationwide for $39.95.
Details are at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk
The controller needs to be repaired.
We regularly repair these control board assemblies for only $32.50 nationwide, and that's much cheaper than replacing the board.
For safety, disassembly and other info see http://tinyurl.com/yzjozk
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