The laptop LCD inverter, or display inverter, is responsible for supplying the correct voltage to the LCD backlight of a laptop LCD screen. Since the backlight is usually the most power-intensive part in a laptop, it requires more voltage than other parts. This is the job of the inverter, to regulate and supply the high voltage necessary to illuminate the backlight tube.

Diagnosing a problem with your HP laptop inverter is usually fairly easy, but may involve some trial and error. If you are experiencing flickering of the screen or the screen is very dim, the inverter is very the likely culprit. Additionally, if the screen doesn’t come on but there is still a faint image visible, or there is a buzzing noise coming from the bottom of the screen, the inverter could be the cause of the issue. Replacing the part is often much easier than repairing it, as an HP laptop inverter replacement is usually inexpensive.

The instructions for replacing you HP laptop inverter vary by model, but the instructions below will apply to most models.

1. Remove the battery and disconnect all power to the laptop. It is also a good idea to leave the laptop for a few hours without power as the inverter can sometimes continue to hold a charge.

2. Remove the screws around the screen’s plastic shell and gently pry the bezel away from the screen. Be careful not to damage any components behind the bezel or the bezel itself.

3. The inverter is usually located at the bottom of the LCD display and should be visible. Remove the Backlight cable and signal cable from the inverter.

4. Remove any screws securing it to the laptop body and gently pull it out.

5. Re-install the replacement inverter into the machine and replace any screws removed earlier. Connect the cables to the new inverter replacement part.

6. Reverse the disassembly instructions to reassemble the laptop.

7. Test your display to ensure proper operation. If your issue remains, you may have an issue with other components of the Laptop display or other components in the main body of the laptop. You want to seek the services of a Laptop Repair center to have the problem diagnosed with greater detail.

These instructions will apply to the majority of HP laptops, but for more detailed instructions, search for a service manual for your particular model, or check out search engine results for other users that may have posted more detailed information pertaining to your model.