Panasonic
Won't Start – Control or Door Interlock Issue
Microwave has power and display works, but pressing START does nothing; no relay click, no fan, no turntable.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Faulty door switch assembly, Defective membrane keypad, Failed START button circuit on control PCB
How to Fix / Troubleshooting
Safety: Door switches are critical safety components. Do not attempt to bypass them.
Steps:
- Door check: Open and close the door firmly several times. Ensure it latches with a solid click.
- Test other buttons: Try setting the clock or using different functions to see if the keypad responds.
- Child lock: Check if a child lock feature is enabled (often indicated by a key symbol). Refer to the manual to disable it.
- Power reset: Unplug for 5 minutes, then plug back in and test again.
If the unit still won't start: A technician should test the door switches, latch assembly, and control PCB.
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Repair Difficulty
Medium
3/5
Required Part
Door Switch Assembly
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