BTH Webmaster message: If you turn on your laptop and the screen is dark but
you can barely make out something on the screen then your back light has failed.
The backlight is a fluorescent bulb. Fluorescent lights need a high AC voltage to operate.
A circuit board inside the laptop called the inverter circuit takes the lower DC voltage
from the laptop battery and converts it to a higher AC to voltage the fluorescent back
light. It's common for these inverter circuits to fail. This video shows you step-by-step
how to disassemble the LCD display and replace that inverter circuit board.
Warning: Avoid static discharge by grounding yourself using a wrist strap or by touching a bare
metal surface like a connector on the back of the laptop and remove all of the power including the
battery and power adapter.
Make sure all data is backed up before removing or replacing your hard drive. Laptop hard drives
are very sensitive and can be damaged easily. Handle with care. Performong your own repairs may
void your warranty.
1. Remove the six bezel screw hole covers and remove the remove the six bezel screws.
2. Bend the hinges slightly back to assist the bezel removal.
3. Starting at the edge of the bezel, pull away and lift up until the bezel unsnaps working
your way around the edge of the screen.
4. Remove the eight screws holding the LCD screen to the back assembly.
5. Lift the LCD screen from the back assembly and turn the LCD screen over.
6. Unplug the LCD cable from the LCD screen and from the inverter circuit board.
7. Unplug the cable from the inverter circuit board.
8. Flip the LCD screen over and remove the single screw holding the inverter circuit board to the LCD screen.
9. Flip the LCD screen over and remove the inverter circuit board from the inverter board slot.
10. Place the new inverter circuit board into the inverter board slot and plug the cable into the inverter.
11. Secure the inverter circuit board to the LCD screen with the single retaining screw.
12. Plug the LCD cable into the LCD screen and into the inverter.
13. Place the LCD screen into the LCD back assembly and secure it with the eight screws.
14. Place the bezel on to the LCD display - snap it into place working your way round the edges.
15. Secure the bezel to the back assembly with the six bezel screws and replace the screw hole covers.
Parts-People Specializes in repairing Dell laptops.
They do not offer parts or service for any other manufacturer. Although they are not affiliated with the
Dell Computer Corporation, they have been specializing in Dell Laptop parts and Dell laptop repair services
for ten years. Parts-People also offers Dell laptop
repair at their 14,000 square foot facility in Austin, Texas. They keep a large inventory of Dell laptop parts
and refurbished Dell laptops so they can replace your Dell computer if it cannot be repaired.