Range Magnetron

Microwave not heating? The magnetron generates the microwaves that heat food. Common repair for units that run but don't warm. DIY-friendly repair.

This microwave high-voltage capacitor stores and releases energy in the high-voltage circuit to power the magnetron. Replacing a failed capacitor helps restore proper heating and protects other components in the high-voltage system.

• Works with the transformer and high-voltage diode to supply the magnetron with the required voltage
• Failure may result in the unit running but not heating
• Shorted capacitors can blow the internal fuse or trip a breaker; opens may cause loud humming or buzzing
• Visible swelling or leakage on the capacitor body are common failure signs

• Unplug the microwave; capacitors can retain a dangerous charge even when unplugged—discharge using an appropriate, insulated method before servicing
• Note wire positions and terminal orientation; transfer any mounting hardware from the original part
• Mount securely and route wires to avoid pinching

The Wall Oven Capacitor Motor is an OEM part for GE wall ovens. Located inside the oven cavity, this motor is responsible for turning the convection fan which circulates hot air for even baking and roasting. 

Symptoms of a bad capacitor motor include:

• Inability to select convection bake or roast features 
• Uneven cooking results 
• Lack of air circulation inside the oven
• Strange noises coming from the fan/motor area
• The convection fan not turning on 

Causes of failure can be wear over time, damage from debris inside the oven, or occasional voltage fluctuations which can degrade motor components.

This GE replacement part is also compatible with Hotpoint, RCA, and some Kenmore models.

Microwave not heating or heating unevenly? A failed magnetron is the likely cause. This high-voltage tube generates microwave energy to cook food.

This TH capacitor is an electrical control-circuit capacitor used on compatible Bosch appliances to help stabilize voltage and filter electrical noise for reliable control-board operation. Replacing a failed capacitor can address intermittent control issues. What it does

• Stabilizes control-board voltage and helps filter electrical noise that can cause erratic behavior.
• Supports reliable startup and operation of control circuits.
• Common symptom link: intermittent or unexplained control-board errors, erratic or non-responsive controls.
• Common symptom link: appliance displays control or error codes related to electronics or intermittently fails to start.

• Disconnect power to the appliance at the breaker before servicing to avoid shock.
• Discharge any capacitors and allow boards to sit before touching components; use appropriate ESD precautions.
• Only replace with the exact part number; confirm orientation and connector fit before reassembly.

Microwave won't heat? A faulty capacitor often causes no heating or weak performance. This high-voltage capacitor restores full power. Moderate DIY.