Proline Main Power Supply Failure Inside Oven

Oven display and controls dead, no lights or response, but mains supply to unit is present

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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 PCB, Failed mains filter, Open thermal fuse in supply line, Loose connection at terminal block

How to Fix / Troubleshooting

Safety first: Verify the circuit is de-energized before opening the terminal cover.

  • Check terminal block: Remove the rear cover and inspect the mains terminal block for loose screws or burnt connections. Tighten and replace damaged parts.
  • Internal fuse: Locate any internal fuses on the control PCB or wiring harness. Test and replace only with the same type and rating.
  • Mains filter: Inspect the EMI filter module for burning or cracking. Replace if faulty.
  • Thermal fuse: Some models have a thermal fuse in the supply line; test for continuity and replace if open.
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Repair Difficulty

Hard 4/5

Required Part

Internal Power Supply Fuse
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