How to Replace an LCD Inverter on an Inspiron
An inverter board works to converts direct current (DC) to alternating current (AC). While the structure of electrical conversion can be complicated, Dell has made replacing the inverter board straightforward. Refer to the User Guide for your model of Inspiron for directions to remove the LCD screen. Most Inspiron laptops have similar design but there may be a few differences. The steps provided here will work for an Inspiron 9400.
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Instructions
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Unplug your laptop and remove the battery. Move your laptop to a solid surface away from carpeting. Use a table or counter top.
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Open the laptop cover. Look for eight screws around the display. These screws hold the display unit in place. Covering the screws are rubber and plastic seals. Remove the seals with a small Flathead screwdriver and store them in a safe location.
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Remove the eight screws with a Phillips screwdriver. Store the screws.
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Separate the cover around the screen from the laptop.
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Remove the screws holding the display screen into place and separate the screen from the laptop cover. You may need a Flathead screwdriver to pry the screen off the computer. Pull the screen away carefully, there will be wires attached to the back of it.
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Unplug the cable from the screen to the laptop, located on the backside of the screen. There are latches holding the LCD cable in place, squeeze them with your fingers and pull the cable away.
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Remove the cable that plugs from the LCD screen into the inverter board. Pull up on the tab attached to the cable.
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Pull the screen and inverter board away from the laptop. The screen should be completely detached now. Set the laptop aside.
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Look at the inverter board. The board is encased inside a metal border that connects it to the bottom of the screen. Remove the screw holding the board to the metal casing. It will be located on the left side of the casing.
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Flip the screen over so the display portion is face down. Look at the backside of the inverter board.
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Unplug the backlight cable from the board. It will be located on one side of the metal casing assembly around the inverter board.
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Pull the inverter board away from the casing.
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Install the new inverter board by sliding it into place.
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Plug the backlight cable into the new inverter board.
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Flip the screen over carefully and replace the screw that holds the inverter board into the metal casing.
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Reinstall the LCD screen and inverter board by reversing the steps you took to remove it.
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References
- Photo Credit Laptop image by Marek Kosmal from Fotolia.com
