The inverter board supplies power to the LCD screen.
The LCD screen attached to your Toshiba Satellite A55 requires a different amount of power to run than the other hardware components inside the laptop. The laptop uses a part called the inverter board to ensure the correct voltage is used for the screen to function. Images on your A55's screen will appear extremely dim if the inverter board is damaged or stops working. To fix the issue, you can remove the LCD screen's cover and change the inverter board.
Instructions
1. Turn off the Satellite A55 and disconnect each of the cables attached to the laptop. Shut the top display lid and flip the A55 over.
2. Locate the black, rectangular battery release latch at the top right corner of the A55's case. Slide the latch to the right and then pull the battery pack out of the Satellite laptop.
3. Turn the A55 laptop over and lift open the top display lid to 90 degrees. Position the edge of a flathead screwdriver underneath the seam of the plastic securing strip located directly above the A55's keyboard.
4. Wedge the screwdriver underneath the strip and lift upward to disconnect it from the A55 laptop. Pull the strip off the laptop's case.
5. Slide either your fingernails or the edge of the flathead screwdriver underneath the seam of the LCD screen's plastic cover piece. Start at one corner and work your way around the cover until the entire piece is disconnected. Pull the cover off the A55's LCD screen.
6. Locate the thin, green inverter board positioned at the bottom of the A55's LCD screen. Remove the cables connected to the left and right sides of the inverter board.
7. Pull the inverter board out of its holder. Place the new board inside the holder and then connect the cables on the left and right sides. Push the plastic cover back onto the A55's LCD screen.
8. Push the plastic cover back onto the LCD screen until it snaps into place. Replace the A55's keyboard securing strip and the battery pack.
Tags: inverter board, plastic cover, screwdriver underneath, back onto, back onto screen, battery pack