Microwave trips the household circuit breaker or blows the fuse as soon as Start is pressed.

Safety first: Unplug the microwave immediately. Do not repeatedly reset the breaker and retry; this can be dangerous.

• 1. Try a different outlet: Plug into another properly rated outlet on a different circuit to rule out a weak breaker (only if safe to do so and the unit does not show obvious damage).
• 2. Visual inspection (external): Check for burning smell, smoke, or unusual noises. If present, do not power the unit again.
• 3. Professional service: This symptom almost always requires internal high-voltage diagnosis. A technician will test the HV capacitor, diode, magnetron, and mains filter, replacing any shorted Beko parts.

Warning: High-voltage components are extremely dangerous; do not attempt DIY repair on these parts.