Power jack for HP NC8430 NW8440 NW9440 NX7400 — extra digital PJ340675

Replacement power jack compatible with HP NC8430, NW8440, NW9440 and NX7400 laptops. This extra digital power jack PJ340675 is designed to restore the DC power input connection on devices with a damaged or loose charging inlet. The component provides the required electrical contacts and housing to re-establish a stable charging connection and is intended for repair or maintenance of the listed HP notebook models.

Advantages

The power jack delivers a direct replacement for the original DC inlet, offering consistent contact alignment and stable electrical connectivity. Its compact form factor matches the laptop’s chassis footprint to allow straightforward mounting and secure fixation. The connector is manufactured to meet standard mechanical tolerances for laptop power inlets, reducing the need for extensive chassis modification. Designed for serviceability, it enables technicians and competent DIY users to restore charging function without replacing the entire motherboard.

Suitable for

• Repairing HP NC8430 laptops with a broken or intermittent power inlet
• Restoring charging capability on HP NW8440 and NW9440 models
• Replacing a loose or worn DC jack in HP NX7400 notebooks
• Workshop and field laptop maintenance where original inlet is damaged

Key specifications

• Type: DC power jack replacement for select HP laptop models
• Compatibility: Designed for use with HP NC8430, NW8440, NW9440, NX7400 series
• Mounting style: Through-hole / board-mounted configuration suitable for original inlet footprint
• Contact type: Standard DC power pin and sleeve contact geometry for laptop chargers
• Material: Metal contacts with insulating housing to ensure electrical isolation
• Typical use: Repair and restoration of DC input for notebook charging

How to use

Power off the laptop, disconnect the battery and AC adapter before beginning any repair. Access the motherboard by removing the service cover or keyboard assembly according to the device service manual. Desolder the faulty DC jack or release its mounting points and remove it from the board. Position the replacement power jack in the original footprint, secure it mechanically and solder the pins to the PCB traces ensuring reliable solder joints. Reassemble the laptop, reconnect the battery and test charging with a compatible AC adapter. If unsure about soldering or board-level repairs, consult a qualified technician.

Usage recommendations

Use ESD precautions and appropriate soldering equipment when installing the replacement jack. Verify polarity and connector seating before powering the laptop. If the original damage was caused by a faulty adapter or physical strain, inspect the power cable and secure the jack to prevent future failure.