Maxie C Kenner , LA December 04, 2016 Appliance: Maytag Countertop Microwave 1.5 Cu. Ft. JMC9158BAS13 Maytag Microwave Jmc9158bas13: Megatron tube burned iut. How to replace Main Control Board (Electronic Control Assembly). Replaced Megatron tube Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes