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Why are the light bulbs not working on my Kenmore microwave?

I have a Kenmore microwave model number 721.80599402 that the lower lights are not working. I have no power to the sockets & have continuity from socket to circuit board.

I changed bulbs in bottom of microwave. As I removed bulb heard popping noise like light bulb popping. I replaced bulbs they & they don’t work. I checked for voltage with meter at sockets no voltage. Checked harness from sockets to circuit board for continuity checks fine. Is there a bench test for keypad? A replacement is $90.00. I did leave unit plugged in while changing bulbs could I have cooked it? Microwave works fine even the indicator for lights works on screen high, night and off. Any help would be greatly appreciated.

Kenmore , Microwaves , Appliances
1 Answer from this member:
Manage My Life
by Manage My Life
January 5th, 2010
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