Question about Roper MHE14XKB Microwave Oven

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Roper mw under cabinet light

I have a roper under cabinet MW that mounts under a cabinet and over a cooktop. the cooktop(under cabinet) light burned out. when I changed the bulb, the old bulb and base seperated upon removal and the wires apparently shorted out when twisting the bulb in the loose base. when I put in the new bulb, the light would'nt work. I've checked the bulbs and even used a meter to see if there was voltage in the socket. No voltage. the 20 amp fuse mounted in the unit checks ok and everything else works fine. Is the control board bad ,is there a particular component on the board that will cause this ?

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  • kellse Oct 31, 2007

    no voltage on socket terminals, see above

  • kellse Nov 01, 2007

    I saw an add for repairs on any control board for $32.50 but now can't find it. Got any leeds?

  • Anonymous Nov 15, 2007

    i have the same poblem....did u get urs fixed?? if so how ....or did u just live with no light which i think is very annoying....

  • kellse Nov 29, 2007

    I found the problem!!!!

    A short piece of circuit ribbon was burned off of the circuit board on the back side of the board, between the diode on the low light relay and the terminal connector on the board, The ribbon acted as a fuse when the terminals were shorted on either side of the bulb when removing it. A simple fix with a soldering gun.

  • David111111 Dec 11, 2007

    Light inop, has only 4 volts



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This may have already been dealt with, but others can benefit from an accurate, thoughtful reply to this problem.

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.

Details of our service and critical safety information and disassembly information is at our site, linked here on Fixya:

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Nov 26, 2007

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You probably need to have the receptacle replaced that the bulb screws into

Posted on Oct 31, 2007

  • Mike Kaiser Oct 31, 2007

    Oops sorry looking at the wiring diagram it looks like the voltage and the neutral line both come from the board with nothing inbetween to stop the voltage flow so it looks like you need a new control board.



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