Magic Chef Cavity Lamp Failure

Microwave interior light does not come on, but unit heats and otherwise works normally.

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Possible Causes

Burned-out cavity light bulb, Loose lamp socket, Failed lamp relay on control board, Broken lamp wiring

How to Fix / Troubleshooting

Safety: Unplug the microwave before replacing the lamp.

Accessing the lamp:

  • On many Magic Chef countertop models, the lamp is accessed by removing the outer cabinet and locating the lamp housing near the front.
  • On over-the-range models, there may be a dedicated lamp cover underneath.

Replacement:

  • Remove the old bulb and inspect the filament. Replace with the same type and wattage specified by Magic Chef.
  • Check the socket for corrosion or heat damage; replace the socket if necessary.

If still not working:

  • Verify voltage to the lamp during operation (technician-level test).
  • If no voltage is present, the lamp relay or control board may be faulty and require replacement.
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Repair Difficulty

Easy 2/5

Required Part

Cavity Lamp
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