Iain A Memphis , TN September 27, 2020 Appliance: Model JVM1540SMSSS Primary interlock switch failed in my ge spacesaver microwave After reading the helpful troubleshooting stories on your website, I disconnected the power from the microwave and had a look around behind the control panel and behind the door frame. I saw the microswitches mentioned in the troubleshooting information, and I immediately noticed the primary interlock switch was charred. I disconnected it and tested it for continuity. Indeed it had failed. I ordered the replacement switch and something told me to also order the latch board which holds the switch. I was afraid I would damage the existing latch board, I suppose. I'm glad I ordered both items. When I removed the old switch from the old latch board, the tabs which secure the switch broke off, as they seemed brittle. Once I discovered that the switches pivot on a plastic pin before locking in place, I quickly and easily installed the new switch in the new latch board, along with the existing switches, and the microwave came back to life when I restored the power. I was very pleased with how quickly I got the job done and that I thought to order the new latch board. I saved a lot of money by avoiding a service call, too! 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes