Black+Decker Internal control board fault

Microwave displays F1 and beeps; may not respond to keypad inputs.

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

Failed microcontroller on PCB, Shorted component on control board, Voltage spike damage

Safety first: Unplug the microwave before inspection.

Power reset: Unplug for 10–15 minutes, then plug back in and test.
Check for moisture:
- If the control area was exposed to steam (e.g., from cooking on a range below), allow it to dry completely.
Inspect control board:
- Remove the control panel and visually inspect the PCB for burns or damaged components.

If F1 persists, the control board will typically need replacement as a complete assembly.

Hard 4/5

Main Control Board (PCB)

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