Zanussi No Power – Primary Supply Failure

Microwave completely dead – no display, no light, no response when plugged in.

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.

Possible Causes

Blown internal fuse, Faulty door interlock preventing power-up, Failed mains filter board, Open thermal fuse on cavity or transformer

Safety first: Ensure the unit is unplugged before opening.

Check outlet: Test the wall socket with another appliance.
Inspect power cord: Look for visible damage; gently wiggle at the plug and entry point to see if power flickers (if safe to do so).
Internal fuse check (for competent persons): Remove the cover and locate the line fuse. If blown, investigate for underlying faults before replacing with the exact same rating.
Check door switches: A failed interlock can sometimes prevent power-up; test and replace as needed.

Hard 4/5

Internal Line Fuse

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