E07
Breville Inverter Power Supply Fault (Inverter Models)

Microwave displays E07 and will not start; sometimes occurs after a power surge.

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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

Failed inverter board, Shorted magnetron drawing excessive current, Power surge damage to inverter components, Loose inverter wiring connections

How to Fix / Troubleshooting

Critical safety warning: Inverter-based microwaves contain high-frequency, high-voltage circuits that are extremely dangerous. Do not open the cabinet or attempt inverter repairs unless you are a qualified technician.

User-level steps:

  • 1. Power cycle: Unplug the microwave for at least 10–15 minutes to allow internal capacitors to discharge partially, then plug back in and test.
  • 2. Check power source: Plug the microwave directly into a properly grounded wall outlet (no surge strips or extension cords). If a surge occurred, test the outlet with another appliance.
  • 3. Reduce load: Remove any heavy or metallic cookware and test with a simple cup of water.

If E07 returns, the inverter or magnetron is likely faulty and must be serviced or replaced by a professional. Continued use may cause further damage or safety hazards.

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Repair Difficulty

Professional Required 5/5

Required Part

Inverter Power Board
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