Restore primary power regulation and fix high-voltage switching failures on the power supply unit with this Import-Grade K3564 (2SK3564) N-Channel MOSFET for HP LaserJet M1005 MFP (New Model). In the revised internal power supply board of the HP M1005 MFP, the primary Switch-Mode Power Supply (SMPS) section relies on an N-channel power MOSFET (2SK3564) to pulse DC voltage through the main switching transformer at high frequencies.
Switching Role & Operational Failure Causes:
During severe power surges, lightning strikes, or extended continuous printing cycles:
- Over-Voltage Breakdown: Electrical mains spikes exceed the transistor's 900V drain-source breakdown threshold, causing an internal junction punch-through.
- Thermal Stress & Short Circuit: Insufficient thermal dissipation or heavy load currents cause collector-drain-to-source shorts, bringing AC line power directly to ground.
- Blown Primary Fuses: When the MOSFET shorts out internally, it causes an immediate high-current draw, blowing the mainboard primary fuse (3.15A / 5A glass fuse) and popping the current-sensing resistor.
Key Symptoms Solved:
- Total Power Failure (Dead Printer): The printer shows no signs of life, display screen remains off, and fans/motors do not initialize when connected to power.
- Repeated Fuse Blowouts: Replacing the power board main glass fuse results in the fuse blowing instantly upon plugging in the power cord.
- No 24V / 3.3V DC Output: Primary SMPS fails to generate internal low-voltage DC lines required for the formatter and ECU logic boards.
- Damaged / Scorched Component: Visible burning, casing cracks, or shorted pin readings (Gate-Drain-Source short) on the original K3564 transistor.
Manufactured with low gate-charge drive requirements, high dielectric strength, and an isolated TO-220F full-pack plastic package, this direct-fit semiconductor allows component-level technicians to repair damaged power supply boards cleanly without replacing the entire expensive LVPS module.
⚙️ Technical Details
- Specification: Details
- Component Type: N-Channel Power Field-Effect Transistor (MOSFET)
- Part Number Marking: K3564 / 2SK3564
- Quality Grade: High-Precision Import Grade
- Condition: New
- Package / Case Style: TO-220F (Fully Isolated Plastic Package)
- Drain-Source Voltage (VDSS): 900V
- Continuous Drain Current (ID): 3.5A
- Low On-Resistance (RDS(on)): ~4.2Ω (Typical)
- Supported Brand: HP (Hewlett-Packard)
- Primary Printer Model: HP LaserJet M1005 MFP (New Model Power Board Variant)
- Cross-Compatible Printers: Canon LBP2900 / LBP3000 / HP LaserJet 1020 Power Boards (SMPS Primary Circuit)
- Primary Function: High-speed primary power switching in the Switch-Mode Power Supply (SMPS) circuit
- Common Symptoms Solved: Printer completely dead/no power, main AC fuse blowing instantly, blown primary SMPS switching transistor
- Package Contents: 1 x K3564 (2SK3564) N-Channel MOSFET
