Balay Stuck Relay or Control Logic Fault

Microwave continues to run (fan and turntable) after the timer reaches zero; may stop only when door is opened or unplugged.

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.

Possible Causes

Welded power relay contacts on control PCB,Control PCB software error,Shorted triac (if used) controlling motor/fan,Keypad sending continuous start signal

How to Fix / Troubleshooting

Safety: Unplug the microwave to stop operation if it does not stop automatically.

User-level: Do not continue using the microwave until the fault is corrected.

Technician-level:

Inspect the control PCB for a welded relay or shorted triac controlling the motor/fan.
Test the keypad for a stuck Start key.
Replace the control PCB or keypad as indicated by diagnosis.

Repair Difficulty

Hard 4/5

Required Part

Main Control PCB

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