F08
Bauknecht Low-Voltage Power Supply Failure on Control Board

The oven display shows F08; the oven may be completely dead or unresponsive to touch/knobs.

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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.

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Possible Causes

Blown internal fuse on control board, Failed power supply components (transformer, SMPS, capacitors), Short circuit in low-voltage circuit, Surge damage from mains

How to Fix / Troubleshooting

Safety first: Disconnect the oven from mains. Capacitors on the board can retain a charge; avoid touching components unnecessarily.

  • Check external supply: Verify that the wall outlet or cooker connection is supplying the correct voltage and that the oven’s main terminal block is not burnt or loose.
  • Access control board: Remove the top or rear cover to access the main control board. Look for an onboard fuse; test it with a multimeter for continuity. Replace only with the same type and rating if blown, and investigate for shorts.
  • Visual inspection: Look for burnt components, cracked solder joints, or bulging capacitors. If present, the board should be replaced.
  • Replacement: Replace the main electronic control board with the correct Bauknecht spare. Transfer all connectors one by one to avoid mis-wiring.

Note: Component-level repair of SMPS circuits is not recommended for untrained persons due to shock risk.

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Repair Difficulty

Professional Required 5/5

Required Part

Main Electronic Control Board (Power Supply Section)
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