Try powering up without the battery installed. If the DC plug is properly inserted, the LED should light up if not, go to the MagSafe connector troubleshooting section.Ĥ.
2007 apple macbook pro logic board fix portable#
Connect a known-good Apple 85W Portable Power Adapter and power cord or plug to a knowngood power outlet. At least one LED must light solid (not flashing). Check that the battery has enough charge to start the computer by pressing the button next to the LEDs on the battery (on the bottom of the machine). Remove any connected peripherals and eject any ExpressCard.Ģ. Use the ‘Display: Dim Video’ troubleshooting section to resolve this issue.ġ. In this case, the system is working properly except for the backlight. An image may be barely present on the screen, but with no backlight clearly illuminating the image. Move on to the Power, but No Video troubleshooting section.
At this point, the issue is no longer a ‘No Power, No Video’ problem. In this case, hold down the power button for six seconds to insure the system is shut down before working on the machine. If you see the sleep LED come on or the Caps Lock LED illuminate when the key is pressed, then the system is indeed drawing power. Note: After each step, check that the system is not supplying power to the logic board. The computer will not power on (no sleep light, no fan movement, no hard drive spin-up,no Caps Lock LED illumination when pressed, and no display illumination). AppleCK, you may want to try the Apple way first:"
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