Safety Precautions
Essential Safety Equipment:
- High-voltage insulated gloves
- Safety goggles
- Insulated screwdrivers
- Multimeter
- Microwave leakage detector
Critical Safety Procedures
- Disconnect Power: Always unplug the microwave oven from the electrical outlet before beginning any repair work.
- Discharge High Voltage: Safely discharge the high-voltage capacitor before touching any internal components.
- Check for Leakage: After reassembly, test for microwave leakage using a proper detector.
- Component Handling: Handle the magnetron and high-voltage components with extreme care.
- Grounding Check: Verify proper grounding of the microwave oven chassis.
- Reassembly Verification: Ensure all safety interlocks are functioning correctly after repair.
- Final Testing: Test the microwave oven with a cup of water before returning to customer.
Disassembly Guide
| Tools Required | Torx screwdrivers, Phillips screwdrivers, nut drivers, plastic pry tools |
| Disassembly Time | 30-45 minutes (experienced technician) |
| Skill Level | Advanced (high-voltage training required) |
| Safety Rating | High Risk - Lethal Voltage Present |
Step-by-Step Disassembly
- External Casing Removal: Remove all external screws and carefully separate the outer casing.
- Control Panel Access: Detach control panel connectors and remove mounting screws.
- Cavity Access: Remove waveguide cover and inspect for damage or food particle accumulation.
- Magnetron Removal: Disconnect high-voltage wires and remove magnetron mounting bolts.
- Capacitor Discharge: Safely discharge the high-voltage capacitor using an insulated screwdriver.
- Turntable System: Remove turntable motor and roller assembly for inspection.
- Door Interlock System: Access and test all door safety interlock switches.
For detailed diagrams, refer to the Samsung Technical Portal or contact Samsung Technical Support at 1-800-SAMSUNG.
Component Specifications
Magnetron
Output: 900-1100W | Frequency: 2450 MHz | Anode Voltage: 4000V | Replacement Part: DG93-00001A
High Voltage Capacitor
Rating: 1.0 μF | Voltage: 2100V AC | Safety Discharge: Built-in 10MΩ resistor | Replacement: DE96-00001B
High Voltage Diode
Type: Silicon Rectifier | Peak Inverse Voltage: 12kV | Current: 350mA | Replacement: DG92-00003C
Turntable Motor
Voltage: 120V AC | Speed: 4-6 RPM | Torque: 3 kg-cm | Replacement: DC32-00001A
Door Interlock Switches
Type: Monitored Safety Interlock | Rating: 15A 125V AC | Failure Detection: Primary monitor circuit | Replacement: DE95-00002A
Control Board
Microcontroller: Samsung proprietary | Display: LED/LCD | Touch Controls: Capacitive | Replacement: BN96-00001A
Common Replacement Parts
Ceramic Fuse
20A 250V - Part #: FU20A250V | Common failure point for power issues
Thermal Cut-Out
145°C Cut-off - Part #: TC145C | Protects against overheating
Waveguide Cover
Mica Sheet - Part #: WG-MICA-01 | Prevents food splatter damage
Door Seal
RFI Gasket - Part #: DS-RFI-01 | Ensures proper microwave containment
Turntable Roller
Nylon Bearing - Part #: TT-ROLL-01 | Supports glass turntable
Control Membrane
Touch Panel - Part #: CM-TP-01 | Interface for user controls
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Microwave doesn't heat | Magnetron failure, high-voltage diode, capacitor issue | Test high-voltage components, replace defective parts |
| Spark inside cavity | Damaged waveguide cover, metal object present | Replace waveguide cover, remove metal objects |
| Turntable not rotating | Turntable motor failure, roller obstruction | Replace motor, clean or replace rollers |
| Display not working | Control board failure, power supply issue | Test control board voltages, replace if necessary |
| Microwave turns off immediately | Thermal cut-out activated, door switch issue | Check ventilation, test door interlock switches |
| Unusual noises | Fan motor bearing, magnetron issue | Replace cooling fan, test magnetron |
Error Codes
- E-1: Door switch failure - Check door interlock mechanism
- E-2: Thermal cut-out activated - Check ventilation and temperature
- E-3: Humidity sensor error - Check sensor connections
- E-4: Communication error - Control board communication failure
- E-5: Magnetron temperature error - Check magnetron thermistor
- E-9: Memory error - Control board memory failure
Manual Downloads
Samsung Microwave Series
MG11H2020CT
1.1 cu.ft. Grill Microwave
ME731K
0.7 cu.ft. Solo Microwave
MC17J8000CS
1.7 cu.ft. Convection Microwave
MS23F300EES
0.9 cu.ft. Digital Microwave
Commercial Models
CM2879
Commercial 1000W Microwave
MC11K7055CG
Over-the-Range Microwave
GE83X
Commercial Convection Microwave
MC12J8033CT
Built-in Microwave Oven