Panasonic Microwave NN-SD997S Door Issue

Dear Forum Members,
 

I am writing to seek your expertise regarding a persistent issue with my Panasonic inverter microwave model NN-SD997S. Despite replacing all three interlock switches with OEM replacements and inspecting the control panel for any damage, the microwave continues to exhibit the following behavior:

1. Automatic Activation: When the microwave door is closed, it automatically turns on, activating the turntable, light, and fan, even without pressing any buttons.
2. Door Latch Assembly: I have carefully examined the door latch assembly, and it appears straight without any visible bending or damage.
3. No Burnt Marks: There are no burnt marks or obvious signs of damage on the control panel.

Given the above details, I am at a loss as to what might be causing this issue. I appreciate any insights or troubleshooting steps you can provide to help me resolve this problem. If there are specific tests or checks I should perform, please let me know.

Thank you in advance for your assistance!

Best regards,