How to Replace the LCD Inverter on an Inspiron 9400
- 1). Shut down your laptop, and unplug all cables and devices from the laptop.
- 2). Close the display panel, and turn the laptop upside down so the front edge is facing toward you. Press the battery's release button, and remove the battery pack from its compartment in the laptop's bottom left corner.
- 3). Remove the wireless card compartment cover and its retaining screw from the upper left corner. Disconnect the two antenna cables from the wireless card.
- 4). Place the laptop faceup, and open the display panel until it is in the 180-degree position. Insert a flat-head screwdriver into the right side of the keyboard bezel, the plastic strip above the keyboard assembly. Pry the bezel from the laptop, working your way to the left side of the display panel until the bezel is removed. Set it aside.
- 5). Unplug the LCD cable extending from the left side of the display panel to its motherboard connector. Remove the two Phillips screws from each display hinge. Lift the entire display panel from the laptop's base.
- 6). Place the display panel faceup on a flat surface. Remove the rubber screw covers from the front bezel (the plastic covering on the display panel) with a small, flat-head screwdriver. Remove the Phillip screws revealed by the rubber screw covers. Carefully remove the front bezel from the display assembly with your finger tips.
- 7). Locate the inverter board inside the bottom edge of the display assembly, and disconnect the cables from each end of the inverter.
- 8). Lift the inverter out of the display assembly, and set it aside.
- 9). Reverse this procedure to install the replacement inverter.
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