Kenmore Microwave: not functioning

Possible Causes

Power supply issue (plug, outlet, breaker)

How to Identify: Microwave shows no lights/sound; other devices on same outlet also unresponsive; breaker may have tripped. Test by plugging into alternate working outlet.

Part: Power cord, outlet, household circuit

Door safety switches not engaging

How to Identify: Microwave display/panel energizes or light comes on but pressing start does nothing; pressing door firmly sometimes makes it work.

Part: Door latch switches

Blown internal fuse or thermal cutoff

How to Identify: Complete power loss to unit but outlet and cable are fine; may require opening chassis to test continuity (professional recommended.

Part: Internal fuse/thermal fuse

Failed control board or electronics

How to Identify: No response or erratic behavior after ruling out external power; opening and testing circuit board components needed; often visible damage.

Part: Main control board

DIY Solutions

Check outlet and circuit breaker

Easy 5–10 minutes

1. Unplug microwave and inspect plug and cord for visible damage.
2. Reset the household circuit breaker/fuse for the microwave circuit.
3. Plug microwave into a known-good working outlet directly (no power strip) and test.

⚠️ Safety First: Do not use extension cords.

Ensure door is fully closed and switches engage

Moderate 5–15 minutes

1. Open and close the microwave door firmly several times.
2. Observe if the interior light comes on or if there is noticeable click from latch.
3. If pressing door firmly sometimes makes unit respond, the door switch assembly may be misaligned or worn.

⚠️ Safety First: Do not force door if alignment is poor; internal components could be damaged.

Professional Repairs

Replace internal fuse or thermal cutoff

Estimated Cost: $30 - $100

Control board replacement

Estimated Cost: $100 - $300

When to Call a Professional

If internal components like fuses or control board need testing/replacement

If there are signs of electrical burning, smoke, or unusual odors

If door switches or internal safety mechanisms are suspected

Preventive Maintenance

• Ensure proper power connection and avoid extension cords: Power-related no-start issues
  Frequency: as needed
• Clean door edges and ensure latch engagement: Door switch misalignment problems
  Frequency: monthly

Frequently Asked Questions

Why is my Kenmore Microwave not functioning?

Common causes include power supply issues, door safety switch malfunctions, and blown internal fuses.

How do I fix Kenmore Microwave not functioning myself?

Check the outlet and circuit breaker, and ensure the door is fully closed and switches engage properly.

How much does it cost to fix not functioning?

Professional repairs can range from $30 to $300, depending on the issue.

When should I call a technician for not functioning?

If DIY troubleshooting fails or if issues seem complex, it's time to consult a professional.

References & Sources

• Electronic microwave not turning on reasons and fixes Community
• Kenmore Microwave Troubleshooting - Machine Solved Repair-Blog

Can I Fix This Myself?

100%

DIY Success Rate Difficulty: Professional

Common Issues Reported by Users

• Fried motherboard (1 mentions)

User Suggested Solutions

1. Replace the motherboard (if available) or purchase a new microwave

   Success rate: 50.0%

Community Discussions

Microwave shows error F84 and won’t function

Motherboard was fried and part is no longer available, requiring a new microwave.

DIY View on Reddit →

Source: Reddit r/appliancerepair