20 Most Recent KitchenAid KHMS2050SSS Microwave Oven - Page 2 Questions & Answers

Hi Ben, This has got to be an intermittent power to the control PCB problem. The control board asking to set the clock means that the CPU has been reset by losing power. First, make sure that the problem is not the outlet by plugging in a small lamp or digital clock to see if it works intermittently or resets. Leave it plugged in for at least 24 hours. (If using a lamp, put in a small 20 watt light bulb or CFL). It could also be a bad connection to or at the fuse holder in the microwave oven. If all of the wiring and connections look good, it's most likely a bad connection on the control PCB probably around the transformer on the board. Be careful.......

There should be a technical sheet hidden behind the controls of the unit, and it will contain a wiring diagram.You didn't mention your full model with suffix, so I don't know if I have your exact model's but the one for KCMS1145JSS1 is here at my Web site.You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.Feel free to contact me directly if you need further troubleshooting help. We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.