General Electric Microwave Transformer

This high-voltage transformer steps household power up to the level needed to energize the magnetron. Replacing a failing transformer can restore consistent microwave heating and reduce excessive humming under load. What it does and common symptoms:

• Steps up AC line voltage to power the magnetron through the high-voltage circuit
• Microwave runs but does not heat food
• Loud humming or buzzing when a cycle starts
• Blows internal fuse or trips breaker immediately after pressing Start (can also be caused by other HV components)

• 1 high-voltage transformer

• Disconnect power; microwave high-voltage components can retain a lethal charge
• Discharge the high-voltage capacitor before handling any internal parts
• Note and photo-document wire positions; transfer one lead at a time to avoid miswiring
• Support the transformer's weight during removal/installation and reuse original mounting hardware and insulators

• "No heat" can also result from a failed magnetron, HV diode, or HV capacitor; diagnose related components before replacing the transformer.

High-voltage transformer that supplies the elevated voltage required by the appliance's high-voltage circuit. Replacing a failed transformer restores proper high-voltage operation and helps resolve related heating or ignition issues. What it does

• Steps up household voltage to the higher voltage used by the appliance's high-voltage components.
• Common symptoms of failure: no or weak heating, loud buzzing, arcing or burning smell, and blown fuses or tripped breakers.
• Replaces the original high-voltage component to restore the appliance's high-voltage function.
• If symptoms persist after replacement, check the high-voltage capacitor, diode and related components.

• Always disconnect power before servicing; this part is used in high-voltage circuits.
• High-voltage capacitors can hold a lethal charge—discharge capacitors and use insulated tools.
• Verify wiring and secure mounting; use the OEM wiring configuration and replace damaged insulators or hardware.
• After installation, test the appliance for correct operation and listen/inspect for arcing or unusual noises.

This microwave high-voltage transformer steps household AC up to the high voltage required by the magnetron to generate microwave energy. Replacing a failed transformer restores heat when the oven runs but food remains cold.

• Steps up line voltage to supply the magnetron during cooking
• Common symptom of failure: microwave runs but does not heat
• May also cause loud humming, a burning odor, or tripped breaker/fuse when energized
• Visual signs can include scorching or discoloration on the windings or terminals

• Disconnect power; the high-voltage capacitor can retain a dangerous charge—discharge it before servicing
• High-voltage microwave repairs are hazardous
• Note wire positions and mounting orientation before removal; transfer any brackets or insulators as configured
• Secure with original hardware and verify all connections are tight and routed clear of heat or moving parts

This high-voltage transformer supplies the elevated voltage needed by the magnetron to produce microwave energy. Replacing a faulty transformer restores heating performance and reduces risk of electrical faults in the oven. What it does:

• Converts line voltage to the high voltage required by the magnetron to generate microwaves.
• Can cause no-heat conditions when failed; replaces a transformer that no longer powers the magnetron.
• Works with the HV capacitor and diode as part of the microwave high-voltage circuit.

• Disconnect power at the house breaker and unplug the appliance before servicing.
• The high-voltage capacitor can hold a dangerous charge—discharge it properly before touching HV components.
• Use insulated tools and avoid contact with transformer terminals; refer to the service manual for wiring and mounting details.

This high-voltage transformer supplies the ignition voltage used to create sparks for gas burner/oven ignition. Replaces a worn or failed transformer to restore reliable spark firing and consistent burner ignition. What it does:

• Converts line voltage to the high-voltage pulse needed for spark ignition
• Sends ignition sparks to surface burners or oven igniters so gas will light
• Common symptom: clicking with no visible spark at the burner or burner(s) that fail to ignite
• Other symptom: intermittent ignition or weak sparking

• One high-voltage transformer

• Disconnect power to the appliance before servicing to avoid electrical shock
• Handle the transformer and high-voltage leads with care; do not operate with covers removed
• Verify correct diagnosis before replacing; check ignition module, wiring, and spark electrodes for faults

This H.V. transformer supplies the high voltage needed to drive the magnetron in microwave ovens so food heats properly. Replacing a failed transformer restores the high-voltage supply that powers microwave output. What it does:

• Converts incoming low-voltage power to the high-voltage required by the magnetron
• Enables normal heating; a bad transformer can cause no-heat or weak-heat symptoms
• Can produce humming, burning smells, arcing, or tripped fuses when failing
• Works with the high-voltage diode and capacitor as part of the HV circuit

• One H.V. transformer

• Disconnect power and verify the appliance is unplugged before starting
• Discharge the high-voltage capacitor fully to prevent shock; use insulated tools
• Handle the transformer carefully — it is heavy and mounted with screws/brackets

The Transformer is an OEM component specifically designed for GE microwaves. It acts as the essential electrical converter that receives normal household current and steps it up into the precisely controlled high voltage needed to power the magnetron tube. During use, the transformer transmits regulated H.V. output to ignite the magnetron and generate safe microwave energy for cooking.

Causes of a bad transformer include wear from long-term heat cycling strains and potential pinhole leaks developing over many years of service. 

Symptoms of a bad transformer include:

• Magnetron failing to ignite or running intermittently
• Portions of foods not heating thoroughly on lower power levels  
• Electrical buzzing or burning smells detected
• Microwave slowly losing full power ability over time

This OEM GE replacement is compatible with Hotpoint, RCA and select Kenmore microwave models as well.