Logik No Start – Control or Door Interlock Issue

Microwave display is on but START button does nothing; timer does not count down and no relay click is heard.

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

Faulty START key on keypad, Door not fully closed or misaligned, Failed door interlock switch, Defective control PCB relay drive

How to Fix / Troubleshooting

Safety: Unplug the microwave before removing panels.

Steps:

  • 1. Confirm door closure: Open and firmly close the door until you hear the latches click. Try pressing START again.
  • 2. Test other keys: See if other buttons (e.g., clock, power level) respond. If only START is unresponsive, the keypad may be faulty.
  • 3. Child lock: Ensure child lock is not active (see LOC entry). A locked control will ignore START.
  • 4. Door switch test (for competent DIYers): With the cover removed, test the door switches for proper operation using a multimeter.
  • 5. Replace faulty part: Replace the membrane keypad if certain keys fail, or the door switch set if interlocks do not change state.
Advertisements

Repair Difficulty

Medium 3/5

Required Part

Door Interlock Switch Set
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements