Will not start up for me, need to know what to check, already have it apart

Kerry, I’d start with the thermal fuse and thermostat, they will be right next to each to each other. You can also check the door latch. timer, and start button as well. If these are all good, then I’d check power and voltage to the unit as well. If you need assistance with any of these items let us know and we’ll find you a few videos. Good luck!