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Identify Problem
03
Find Solutions
Microwave light bulb not working
Brand:Sharp
Model:R-409EW
Product:Microwave
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Microwave Light Bulb Not Working? Microwave Oven Troubleshooting
01:48
Common solutions for: Microwave light bulb not working
01 - Power Supply Board
A microwave light bulb not working could be caused by a defective power supply board, although this is rarely the case. Before replacing the board, check the light bulbs, sockets, and wiring. If these parts seem to be working properly, test the power supply board with a multimeter to determine if it sending the correct voltage to the light bulb socket. If the board is not sending enough voltage to the light bulb socket, replace the board.
Genuine Part
Less Common
02 - Light Socket
Before replacing the light socket, replace the light bulb. If you replace the light bulb, and the light still doesn’t work, use a multimeter to test the light socket for continuity. If the light socket does not have continuity, replace it.
Genuine Part
Uncommon But Possible
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