E-85
Samsung Inverter / Power Supply Error (Inverter Models)

Microwave displays 'E-85' and will not start or may freeze on the display.

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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, Loose high-voltage wiring, Faulty main PCB control to inverter

How to Fix / Troubleshooting

High-voltage danger: Inverter-based microwaves contain high-voltage circuits that can be lethal even when unplugged. Do not attempt to service the inverter or magnetron yourself.

  • Reset: Unplug the unit for 10–15 minutes and reconnect. If E-85 reappears, internal power components are likely faulty.
  • Check ventilation: Ensure vents are clear to prevent overheating of the inverter and magnetron.
  • Professional repair: A technician should test the inverter board, magnetron, and associated wiring with proper safety equipment. Typically, the inverter board or magnetron assembly will need replacement.
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Repair Difficulty

Professional Required 5/5

Required Part

Inverter Board / Magnetron Assembly
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