Teka Start Circuit / Relay Drive Failure

Microwave display and buttons work, but pressing START does nothing; no relay click or internal activity.

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.

Possible Causes

Defective START button on keypad,Faulty door closed detection,Failed relay driver on control PCB,Child lock still active

User checks:

Verify that the door is fully closed and latched; reopen and close firmly.
Check if a child lock icon is displayed; if so, disable the lock according to the manual.
Try other buttons to see if they respond; if only START is unresponsive, the keypad may be faulty.

Further diagnosis (technician):

Test the START key function via service mode (if available) or by measuring keypad matrix signals.
Check door switch signals at the control board.
Inspect the main relay and driver components on the PCB.

Medium 3/5

Membrane Keypad

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