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I have replaced the DC input board, charged battery for 4 hours. When i power up i get the chime and white screen but no apple logo or the spinner. After a minute or so i have hit the caps lock key and it lights up. Also at start up the fan comes on and the cd/dvd spins. I can shut it off with the normal holding down power on button for 5 sec. Any Clues, i have double checked the screen connector several times. Thanks
Have you tried a safe boot? Check your HD. To do this try a different boot source (Optical disk or target booted mac running the same OS). If this answer is acceptable please remember to return and mark it.
The problem isn’t power (at least, not any more); it’s that the computer doesn’t see an operating system to start from, possibly because it can’t see the hard drive. Open the computer up again, and check to be sure that the hard drive is securely connected to the hard drive cable, and the hard drive cable securely connected to the logic board socket. MacBook Unibody Model A1342 Hard Drive Replacement MacBook Unibody Model A1342 Hard Drive Cable Replacement If that doesn’t work, remove the hard drive and attach it to the computer with a USB interface. Can you boot off the drive that way? SATA Optical Drive USB Cable Silicone 2.5" Hard Drive Enclosure with USB 2.0 Cable If you can boot off the internal drive when it’s run externally, then the problem is the interface between the hard drive and the logic board. If the cable connector on the logic board is OK, you can try replacing the hard drive cable. MacBook Unibody (Model No. A1342) Hard Drive Cable You can also test bootability with an optical disk (Snow Leopard or later, for your model), or a flash drive with 10.6-10.9 on it. If you boot from an external drive and can see your HD (either in the finder or in Disk Utility), you can try repairing it with Disk Utility.
Same problem here, BUT it works on an external monitor. Any other suggestions?
