If you have a laptop (MacBook, MacBook Pro.
If the numbers are right, then you have a fuse for your backlight on your logic board. On the System Preferences screen, click on the Energy Saver icon (it looks like a compact fluorescent light bulb). Replace battery connector with sleep switch. Check cables around the hinges for damage.ġ0. Verify that LCD panel cable and LVDS cable connections are seated properly and that the cables are not damaged.
See Knowledge Base article 303319, “Resetting MacBook and MacBook Pro System Management Controller (SMC)”. Reboot the computer-hold down the Control and Command keys and press the Power button, or press and hold the Power button for 5 to 10 seconds to shut down the computer, then press the Power button to restart.ĥ. Press F2 (with the fn key pressed and not pressed) to increase the screen brightness setting.Ĥ. Try known-good power outlet, power adapter, and power cord.ģ. If you are referring to the entire desktop screen, and you have already tried changing the resolution, you might take a look at the monitor screen adjustments on. Apple suggest:" No display or dim display, but computer appears to operate correctly and has video operating on external display (display is fine after startup, but after a few seconds no display or dim display)Ģ. If it is the Taskbar, just left click on the Taskbar, hold down the mouse button, and drag the Taskbar to the bottom of the screen or any other location and release the mouse button. If it does not, then you are having GPU trouble on your computer. If so, then it is the inverter/backlight circuit of your computer. Click the new Volume button found in the menu bar to adjust the volume. Now, go to the Outputs tab, and check the Show Volume in Menu Bar option. Try to connect an external display and see if that works. To add the Volume feature to the menu bar, click the Apple icon in the menu bar and choose the System Preferences option. Since you already replaced the LCD with a working one, it is possible that this is caused by a bad inverter. So this answer is a general answer and hopefully the Mac Guru's can help you out further. Don, first I must admit that I am not a Mac person.