It can be frustrating when your Dell computer's LCD screen goes bad. The majority of LCD failures are due to either a bad inverter board or a burnt out backlight. Your LCD screen's backlight is powered by the inverter board, which is a small circuit board installed into your LCD screen. If the inverter board isn't the problem then your backlight may have burnt out. The backlight allows you to view images, video and graphics on your computer screen. If the backlight is bad, then your Dell E153FP LCD monitor will go black.
- Skill level:
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Things you need
- Phillips-head screwdriver
- Flathead screwdriver
Turn off the LCD screen, unplug the power cord from the nearest electrical socket, and disconnect the serial cable from the back of your desktop computer. Let the desktop sit for 10 to 20 minutes before you attempt the disassembly. Touch an unpainted metal surface to discharge all static electricity from your body. Static electricity can damage the electrical components of your LCD screen.
Place the LCD screen face up. Insert a flathead screwdriver into the crease along the outside edge of the LCD screen. Pry up the front panel of the LCD screen. Work your way around the perimeter of the LCD screen. Remove the front panel and set it aside.
Remove the Phillips-head screws from the metal casing on either side of the LCD screen. Grasp the top edge of the LCD screen and tilt it downward until the back side of the screen is visible. Locate the LCD video cable on the back side of the screen near the top. Disconnect it from the screen. Locate the inverter board, which is a small circuit board near the bottom of the LCD screen on the back side of the screen.
Disconnect the power cables from each end of the inverter board and remove the sticky Phillips-head screws securing the inverter board to the LCD screen. Lift the inverter off of the LCD screen and set it aside. The inverter board cables are connected directly to the backlight. Take note of exactly where they are on the LCD screen for when you reassemble the screen.
Place the LCD screen vertically, and pry off the back side of the LCD panel by inserting a flathead screwdriver into the tiny notches along the outer edge of the LCD screen. Work your way around the LCD screen until the back side of the LCD screen is separated from the actual screen. The backlight will be sitting inside the LCD screen along the bottom edge. Lift it out of the screen and set it aside.
Repeat this procedure in reverse to install the new backlight.
Tips and warnings
- The E153FP users manual strictly forbids taking apart the LCD panel assembly. This means that if you damage your LCD screen in the disassembly process, your Dell warranty does not cover it.
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