Samsung Microwave: not powering on

Professional Repair Guide

What is this symptom?

Is your Samsung microwave not powering on? If you notice no lights, fan, or display, it could be due to common issues like a power supply failure, blown fuse, or faulty door switch. Understanding the potential causes can help you troubleshoot effectively.

Urgency: Medium

Important Tips for Samsung Models

  • Samsung support notes that overheating or low power supply may cause microwave to not turn on and suggests basic checks and contacting support.

Possible Causes

Power supply issue (outlet/circuit breaker)

How to Identify: Microwave shows no power and another device also doesn’t work when plugged into the same outlet; a tripped circuit breaker is observed.

Part: External electrical supply

Blown internal main fuse

How to Identify: No response from microwave at all even when outlet is confirmed to have power; continuity test shows blown fuse.

Part: Internal microwave fuse

Faulty door switch/interlock

How to Identify: Microwave shows no power when door is closed; clicking of switches absent; safety interlock prevents operation.

Part: Door interlock switches

Control board failure

How to Identify: No response from controls or display, and resetting power doesn’t help; visible board damage possible.

Part: Electronic control board

Thermostat/thermal cutoff tripped

How to Identify: Microwave overheated previously; thermal cut-out may prevent powering on until cooled or component replaced.

Part: Thermostat/thermal fuse

DIY Solutions

Verify outlet and reset circuit breaker

Easy 5–10 minutes
Tools Needed: none
  1. Unplug the microwave and plug in another device to confirm outlet power.
  2. Check home circuit breaker panel and reset any tripped breakers.
  3. Plug microwave back in and test for power.
⚠️ Safety First: Do not work on electrical panel if unfamiliar; call electrician if unsafe conditions.

Check door latch and safety interlocks

Moderate 10–20 minutes
Tools Needed: screwdriver (if opening needed)
  1. Ensure door closes fully and latches securely.
  2. Listen for clicks when closing door indicating switches engaging.
  3. If comfortable, unplug microwave, open housing, and inspect door switches for damage.
⚠️ Safety First: Unplug microwave first; avoid touching high-voltage components.

Reset microwave power

Easy 5 minutes
Tools Needed: none
  1. Unplug the microwave from the outlet.
  2. Wait 1–2 minutes to allow internal controllers to reset.
  3. Plug back in and attempt to power on.
⚠️ Safety First: Does not address internal electrical faults.

Professional Repairs

Replace internal fuse and safety thermostats

Estimated Cost: $50–$120

Replace control board

Estimated Cost: $100–$250

Repair/replace door interlock switches

Estimated Cost: $40–$100

When to Call a Professional

Microwave shows signs of internal electrical failure after basic checks
Internal components such as fuses or control board need replacement
High-voltage components suspected

Preventive Maintenance

  • Ensure proper ventilation and avoid prolonged continuous use: Overheating that can trip thermal cutouts
    Frequency: regularly during use
  • Inspect power cord periodically: Cord damage that could interrupt power
    Frequency: every few months

Frequently Asked Questions

Why is my Samsung Microwave not powering on?
Common causes include power supply issues, a blown internal fuse, or a faulty door switch.
How do I fix Samsung Microwave not powering on myself?
You can check the outlet, reset the circuit breaker, and inspect the door switches for damage.
How much does it cost to fix not powering on?
Professional repairs typically range from $40 to $250, depending on the issue.
When should I call a technician for not powering on?
If DIY solutions fail or if you suspect a complex issue like a control board failure, it's time to call a technician.

References & Sources

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

67%
DIY Success Rate Difficulty: Either

Common Issues Reported by Users

  • Internal fuses blown (2 mentions)
  • Burnt wires (1 mentions)

User Suggested Solutions

  1. Check and replace the internal fuses if necessary.

    Success rate: 25.0%

  2. Check for burnt wires and replace them with new female crimp on terminals.

    Success rate: 25.0%
Analysis based on 3 community discussions
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

  1. Samsung Microwave - No Power Troubleshooting
  2. Samsung Over the range microwave not powering on
  3. Samsung microwave no power

Community Discussions

no power to the microwave

Check for burnt wires and replace them with new female crimp on terminals.

DIY View on Reddit →

not powering on

Check and replace the internal fuses if necessary.

DIY View on Reddit →

Source: Reddit r/appliancerepair

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