Choose Product
Identify Problem
03
Find Solutions
HomeRepair HelpEmerson Microwave RepairEmerson Microwave light bulb not working Repair

Emerson Microwave light bulb not working

An Emerson microwave light is not working, start with the light bulb, which is the most likely cause. A burned-out bulb can make the microwave light bulb not working even when the microwave operates normally, so replace the bulb before testing related parts. If your model uses a halogen lamp, test it with a multimeter for continuity or install it in an identical socket. Next, inspect the light socket and wiring, then test the main control board to confirm it sends the correct voltage to the socket. A defective door switch can also prevent the cavity light from turning on or stop the light button from functioning. Test each door switch, including the primary, secondary, or monitor switch where applicable, for continuity. A separate control board or micro switch is a less common cause. Enter your Emerson microwave model number to find the exact replacement light bulb, halogen lamp, socket, switch, or control board for your appliance. Any repair that requires opening the outer cabinet must be handled carefully because the high-voltage capacitor can store a lethal charge even after the microwave is unplugged. Properly discharge the capacitor before interior work, or use a qualified technician if you are not familiar with the procedure.

01 - Emerson Microwave Light Bulb

The light bulb itself might be burned out. Replace the light bulb before replacing any of the parts associated with the light bulb
Enter model number to search for the required part specific to your product
Need help finding your model number?
Shop all Emerson Microwave Light Bulb Parts
Top Solution

02 - Emerson Microwave Halogen Lamp

To determine if a halogen lamp has failed, you can use a multimeter to test it for electrical continuity, or install the lamp into an identical socket to test it.
Shop all Emerson Microwave Halogen Lamp Parts
Top Solution

03 - Emerson Microwave Main Control Board

Before replacing the control, check the light bulbs, sockets, and wiring. If these parts seem to be working properly, test the control board with a multimeter to determine if it sending the correct voltage to the light bulb socket. If the control board is not sending enough voltage to the light bulb socket, replace the control board.
Shop all Emerson Microwave Main Control Board Parts
Highly Likely

04 - Emerson Microwave Door Switch

A defective door switch may not signal the control board that the door is open or closed which may prevent the microwave light from turning on or prevent the button that controls the light from functioning. To determine if any of the door switches are defective, use a multimeter to test each of the switches for continuity. If any of the door switches do not have continuity, the switch or switches should be replaced.
Shop all Emerson Microwave Door Switch Parts
Highly Likely

05 - Emerson Microwave Control Board

A microwave light bulb not working could be caused by a defective control board, although this is rarely the case. Before replacing the control board, check the light bulbs, sockets, and wiring. If these parts seem to be working properly, test the control board with a multimeter to determine if it sending the correct voltage to the light bulb socket. If the control board is not sending enough voltage to the light bulb socket, replace the control board.
Shop all Emerson Microwave Control Board Parts
Common

06 - Emerson Microwave Micro Switch

A defective micro switch may not signal the control board that the door is open or closed which may prevent the microwave light from turning on or prevent the button that controls the light from functioning. To determine if any of the micro switches are defective, use a multimeter to test each of the switches for continuity. If any of the micro switches do not have continuity, the switch or switches should be replaced.
Shop all Emerson Microwave Micro Switch Parts
Common

Frequently Asked Questions

Why is my Emerson microwave light bulb not working?
How do I replace an Emerson microwave light bulb?
What else can cause an Emerson microwave light bulb not to work?
How do I find the correct Emerson microwave light bulb or replacement part?
Can I test the Emerson microwave control board for a light problem?

Shop by Emerson Microwave Parts

Emerson Microwave Blower Wheel & Fan Blade Replacement Parts
Emerson Microwave Cap, Lid & Cover Replacement Parts
Emerson Microwave Capacitor Replacement Parts
Emerson Microwave Circuit Board & Timer Replacement Parts
Emerson Microwave Diode, Magnetron & Resistor Replacement Parts
Emerson Microwave Door Replacement Parts
Emerson Microwave Fastener Replacement Parts
Emerson Microwave Fuse, Thermal Fuse & Breaker Replacement Parts
Emerson Microwave Glass Tray, Coupler & Support Roller Replacement Parts
Emerson Microwave Insulation Replacement Parts
Emerson Microwave Latch Replacement Parts
Emerson Microwave Lighting & Light Bulb Replacement Parts
Emerson Microwave Manuals, Care Guides & Literature Replacement Parts
Emerson Microwave Miscellaneous Replacement Parts
Emerson Microwave Power Cord Replacement Parts
Emerson Microwave Switch Replacement Parts
Emerson Microwave Touchpad Replacement Parts
Emerson Microwave Transformer Replacement Parts

Shop by Popular Emerson Microwave Models

Emerson AT1551 Microwave Parts
Emerson EM8106W Microwave Parts
Emerson EMW8987W Microwave Parts
Emerson MT3140 Microwave Parts
Emerson MW81022SS Microwave Parts
Emerson MW8102SS Microwave Parts
Emerson MW8107 Microwave Parts
Emerson MW8107WA Microwave Parts
Emerson MW8117W Microwave Parts
Emerson MW8126 Microwave Parts
Emerson MW81658B Microwave Parts
Emerson MW8618RD Microwave Parts
Emerson MW8625W Microwave Parts
Emerson MW8775S Microwave Parts
Emerson MW8775W Microwave Parts
Emerson MW8779W Microwave Parts
View more
Repair Clinic
Join Repair Clinic's VIP email list for 10% off, plus other discounts and tips!
Our Story

Family-owned and operated since 1912, Burke America Parts Group is the longest-running genuine appliance, HVAC, and outdoor power equipment parts solution in North America. At Repair Clinic, we're proud to be an international brand trusted by the pros as well as the DIY community.

About Repair Clinic
Customer StoriesRepair Parts BrandsDIY Repair BlogIn the News
Click for the BBB Business Review of this Appliances - Major - Parts & Supplies in Canton MI
Quick Links
Shipping Information365 Day Return PolicyRetail Location & HoursContact UsTrack OrderReviewsRepair Clinic Pro
Social Media
Privacy PolicyDo Not Sell/Share My Personal InformationTerms & ConditionsSitemapGet 10% Off
© 2026 RepairClinic.com