Blomberg No Power / Dead Control Board

Oven display is completely dead; no lights, no response.

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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, no mains supply, faulty power cord or terminal block, failed main control board power supply

How to Fix / Troubleshooting

Safety first: Ensure the breaker is off before opening any covers. Only qualified persons should test live voltages.

  • Check mains supply: Verify that the circuit breaker is on and that there is power at the outlet or junction box.
  • Inspect terminal block: Remove the rear cover and check for loose or burned connections at the mains terminal block.
  • Internal fuse: Some Blomberg ovens have an internal fuse on the control board or wiring harness. With power off, locate and test the fuse for continuity. Replace with the exact type and rating if blown, and investigate why it blew.
  • Control board: If supply and fuse are good but the display remains dead, the main control board is likely faulty and must be replaced.
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Repair Difficulty

Hard 4/5

Required Part

Main Control Board (Oven PCB)
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