Microwave Won't Start

Why a Microwave Won't Start

A microwave that won't start, whether the display is dark or the keypad does not respond, points to one of several independent systems rather than a single obvious cause. A failed door switch is the most common culprit, since the control board won't allow the unit to run unless it detects the door is fully closed, even when the switch itself is the part that's broken. A tripped thermal fuse cuts power as a safety measure after the unit overheats, and it won't reset on its own once tripped. A failed control board can stop the unit from starting even though power is reaching the microwave normally, since the board manages every function including the start signal. An unresponsive touchpad can look identical to a control board failure from the outside, but it's a separate part and a separate repair. Each of these requires testing to tell apart, since the symptom looks the same from the front of the unit.

How San Marcos Appliance Repair Fixes It

A technician tests the door switches, thermal fuse, control board, and touchpad on-site to identify which system is preventing the unit from starting. San Marcos Appliance Repair carries common parts for Whirlpool, GE, Samsung, LG, KitchenAid, and Panasonic microwaves and backs every completed repair with a 90-day parts-and-labor warranty. Same-day appointments are available throughout San Marcos and North San Diego County. Call 760-621-5157 to schedule a technician today.

Diagnosed by Certified Technicians

Before testing the door switch, thermal fuse, control board, and touchpad, the technician assigned to this repair has already completed NASTeC certification in appliance service and repair and trained through MiraCosta College's Technology Career Institute or San Diego College of Continuing Education (SDCCE) under founder and Master Appliance Repair Technician Francisco Ortega, who has run San Marcos Appliance Repair since 2006. Formal certification plus hands-on training backs the 90-day parts-and-labor warranty on every microwave won't start repair, backed by our licensed and insured guarantee.