Virginia F Newburyport , MA November 08, 2014 Appliance: General Electric Microwave JVM1540DM5BB Ge Microwave Jvm1540dm5bb: Start button did not work; express buttons clock etc all still worked but the contact on the start button must have worn our after only a year!!!. How to replace Control Panel. Ordered a new control panel and proceeded to install it according to online video instructions. Pretty easy, just remember to be clear on where the wires you detach actually go! 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes