Is there a fuse for the exterior light on this microwave? If so how do I access it? Also is this light bulb a special order? Purchase a 120v 40 w at Loews and it will night light. Thank you.
There are no fuses for the surface lights. Remove the bottom panel, unplug the wire harness and check for 120 VAC to the lights while the control calls for full light.
If there is a proper voltage then replace the light bulbs. Unplug the microwave before you’ll do it to prevent possible damage to the control board.
If there is no proper voltage then the problem is a bad control board.
- The part number for the control board is AP3885533
Here are the break down diagrams and Replacement parts for WHIRLPOOL MH1150XMQ1 | AppliancePartsPros.com
Gene.