Customer Questions and Answers for Magnetron Assembly by Ge

This magnetron assembly generates the microwave energy that heats food. Replace a weak or failed unit to restore proper cooking performance and resolve no-heat complaints when the microwave appears to run but no longer warms items. What it does:

• Converts high-voltage power into microwave energy to heat food inside the oven cavity
• Failure can cause: microwave runs but won't heat or takes much longer to heat
• Often accompanied by a loud humming/buzzing during cook
• May trip the internal fuse/breaker or shut off shortly after start
• Visible damage to the magnetron antenna cap or signs of arcing near the waveguide can point to failure

• 1 magnetron assembly

• Unplug the microwave and safely discharge the high-voltage capacitor before servicing
• Remove the outer cover to access the magnetron; note wire locations and orientation
• Transfer any required mounting hardware/shields from the old part; avoid touching or damaging the ceramic insulators or antenna cap
• Reassemble completely and test heating with a cup of water—never operate the unit empty

• No-heat issues can also be caused by a failed high-voltage diode, capacitor, transformer, or door switches; diagnose where safe before replacing