SilverCrest Start Circuit / Safety Interlock Inhibit

Microwave display and buttons work, but pressing START does nothing

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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 START button on keypad, Door switch not signaling closed, Control PCB logic fault, Child lock enabled

How to Fix / Troubleshooting

SAFETY: No high-voltage work is required for basic checks, but unplug before removing the control panel.

  • Step 1 – Child lock:
    • Check if a padlock icon is lit; disable child lock per SilverCrest manual (usually holding STOP or a specific key).
  • Step 2 – Door closure:
    • Open and close the door firmly; listen for clicks.
    • Try holding the door slightly pressed in while pressing START.
  • Step 3 – Keypad test:
    • Try other functions (e.g., STOP, power level) to see if they respond.
    • If only START is unresponsive, the keypad may be faulty.
  • Step 4 – Internal checks (for DIYers):
    • Remove the control panel and reseat the keypad ribbon cable.

If the issue persists, the membrane keypad or control PCB likely needs replacement.

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Repair Difficulty

Medium 3/5

Required Part

Membrane Keypad
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