Tower Partial Keypad Failure

Microwave keypad buttons do not respond or only some buttons work.

Advertisements

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.

Advertisements

Possible Causes

Worn membrane keypad contacts, cracked keypad ribbon cable, contamination under keypad overlay, failed keypad scan lines on control PCB

How to Fix / Troubleshooting

Safety: Unplug before working on the control panel.

Steps:

  • 1. Test all keys: Note which keys work and which do not. Patterns (e.g., entire row/column) suggest ribbon or PCB issues.
  • 2. Clean surface: Wipe the keypad with a soft, slightly damp cloth and mild detergent. Do not allow liquid to seep into edges.
  • 3. Reseat ribbon cable (advanced): Remove the control panel and gently reseat the keypad ribbon cable on the control PCB.
  • 4. Replace keypad: If specific keys remain dead, replace the membrane keypad or entire control panel assembly.
Advertisements

Repair Difficulty

Medium 3/5

Required Part

Membrane Keypad
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements