How to Replace an LCD Lamp
by Contributing Writer
If the LCD screen on your computer has been going dark recently, more than likely the backlight lamp is broken. The good news is this is a relatively minor problem as far as computers are concerned, and there's no need to concentrate on any other part of the computer than the screen. So, if you don't have the time or money to take your computer to a technician to have him replace the backlight, you can do it yourself--at home--in a matter of minutes.
Power off your computer and disconnect the AC adapter.
Remove the screws on each side of the monitor screen. Once the screws are removed, the plastic bezel (screen guard) can be removed. Certain laptops or desktops do not have screws which secure the bezel. If this is the case with your computer, insert the tip of a small knife in the seam between the bezel and the screen and work your way around the screen of your computer until it pops out.
Pop the bezel out, exposing all of the LCD screen. Pull the LCD screen gently away from the monitor by the corner. Be mindful that the screen is still connected by a ribbon cable.
Remove the tape over the ribbon cable where it connects to the screen, and gently pull the cable to disconnect it.
Turn the LCD face-down, and remove the piece of tape that holds the top metallic foil against the back of the LCD.
Lift the metallic foil to expose the backlight. Remove the single screw at the end of it that holds it in place.
Unclip the wire at the end of the backlight from the inverter (power source to the backlight) and remove it from the LCD. Replace it with the new backlight (available at any electronics store or online), and reassemble your computer in the reverse order you took it apart.