Gaggia Overheating Component or Electrical Fault

Machine smells of burning plastic or electronics during use

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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

Overheating boiler or thermoblock, Loose or burned wiring connector, Failing main control board, Foreign object touching heater

How to Fix / Troubleshooting

Safety first: Turn off and unplug the machine immediately. Do not continue using it until the source is identified.

Inspection (advanced):

  • Remove the cover and visually inspect for burned connectors, melted plastic, or discoloration near the boiler, heater, and main board.
  • Check that no wires are touching hot surfaces.

Any signs of burning or melting require replacement of the affected parts (wiring harness, connectors, heater, or board). This type of fault should be handled by a qualified technician due to fire risk.

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Repair Difficulty

Professional Required 5/5

Required Part

Wiring Harness
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