Safety first: Unplug the microwave. Door switch circuits are tied into the high-voltage safety chain.

Step-by-step checks:

1. Inspect door alignment: Check that the door closes squarely and that the hinges are not loose or bent. Adjust or tighten hinges if necessary.
2. Listen for clicks: Slowly open and close the door while listening for distinct clicks from the interlock switches. Missing clicks can indicate a failed or misaligned switch.
3. Access switch assembly: Remove the outer cabinet and locate the door switch cluster near the latch.
4. Test switches: Label and disconnect wires. Use a multimeter to test each switch for proper open/closed operation as the latch is actuated. Replace any switch that does not change state correctly.
5. Check wiring and bracket: Ensure all connectors are tight and the switch bracket is not bent. Realign if necessary.

Note: Always replace door switches with the exact Daewoo-specified type and rating.

Microwave shows F5 and will not start, often after door operation

Possible Causes