Bomann Interior Lamp Failure

Microwave interior light does not turn on, but heating and other functions work normally.

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Possible Causes

Burnt-out cavity lamp, Loose lamp socket, Faulty lamp wiring, Failed lamp relay on control PCB

How to Fix / Troubleshooting

Safety: Unplug the microwave before replacing the lamp. Some models require cabinet removal.

  • Step 1 – Locate the lamp: On Bomann microwaves, the lamp is often behind a small cover inside the cavity or behind the control panel. Consult the user manual or inspect the unit.
  • Step 2 – Access and inspect: Remove the lamp cover and inspect the bulb. If the filament is broken or the glass is blackened, replace it with the same type and wattage.
  • Step 3 – Check socket and wiring: Ensure the lamp is seated firmly in the socket and that the wires are secure.
  • Step 4 – Control issue: If a new lamp does not work, the lamp relay or control PCB may be faulty and require professional service.
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Repair Difficulty

Easy 2/5

Required Part

Microwave Cavity Lamp
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