📡 Samsung microwave displays H1 or H2 error (magnetron)

🔧 Troubleshooting Steps

1. ⚠️ DISCONNECT POWER AND DISCHARGE THE HIGH-VOLTAGE CAPACITOR (1μF/2000V) — this is lethal. Use a 1kΩ resistor to bleed the cap
   ✓ Expected: Capacitor discharged, 0V reading
2. H1 = magnetron not heating. Check the magnetron filament with a multimeter — should read ~0.5-1Ω between the two filament pins
   ✓ Expected: Filament resistance in range
3. If the filament is open, replace the magnetron. Match the part number exactly — microwave magnetrons are model-specific
   ✓ Expected: New magnetron installed
4. H2 = high-voltage transformer fault. Check the HV transformer secondary winding for open circuit
   ✓ Expected: Continuity through secondary winding
5. Check the rectifier diode and HV capacitor while you have the cover off — both are common simultaneous failures
   ✓ Expected: Diode shows one-way continuity, cap holds charge

💡 Related Resources

• Samsung manuals & error codes — model-specific documentation
• Look up error codes for your appliance
• Component failure reference — ohm ranges and test procedures
• All troubleshooting guides — browse by appliance type
• Find service manuals for your specific model