General Electric Cooktop Transformer

This replacement transformer converts household line voltage to the correct level for the appliance's control circuits. It restores stable power to the display and relays so the unit can start and run consistently.

• Converts incoming AC power to the proper voltage for electronic controls and relays
• Failure can leave the display blank and controls unresponsive even though power is supplied
• Intermittent resets or loss of functions can indicate a weakening transformer
• Replace if windings test open/shorted or the part shows overheating damage

• Disconnect power at the breaker before servicing; this part connects to line voltage
• Photograph and label wires; transfer connections one at a time to the new part
• Mount securely and route wiring away from sharp edges and hot components
• Restore power and verify the controls power up normally

This high-voltage transformer steps line voltage up to power the magnetron, producing microwave energy. Replacing a failed transformer can restore heating when the oven runs but doesn't heat or hums without cooking.

• Supplies the high voltage the magnetron needs to generate microwave energy
• Failure may present as the microwave running but not heating
• May cause a loud hum or buzz with no heat
• Can blow an internal fuse or trip a breaker immediately after pressing Start

• Disconnect power before service; the high-voltage capacitor can retain a dangerous charge even when unplugged
• Support the heavy transformer during removal/installation and reuse original mounting hardware and wire positions
• After installation, verify secure connections in the high-voltage circuit (capacitor and diode) before testing