I have an iMac “Core i7” 2.8 27-Inch (Late 2009) that I replaced the hard drive in. Before I replaced the hard drive it wouldn’t boot fully in. The hard drive tests showed that the drive had bad sectors.

When ever I used a memtest, ultimate boot CD, or any Linux CD it would boot but the screen would go black when the video driver was loaded. I thought nothing of it.

When I replaced the hard drive I put too much force on the LCD connector on the board and it bent up off the board a bit. Darn.

I was able to get Mac OS back on. The display works, but as soon as it boots in a bit the screen gets lines and freezes. The system has 4 ram chips, which I’ve tried all independently and running memtester from a Linux boot disc says the RAM is okay. Although I still can’t get anything but a black screen when I boot into Linux (I SSH in to the Linux livecd).

In short:

  1. The system always boots up to a black screen when using memtest, ultimate boot cd, and Linux live cds. But Mac installers work fine.
  2. The memory seems fine.
  3. It only freezes when booting into the installed MacOS.
  4. The hard drive is now new and installs fine.

Would the lines be from the bent connector and is there any way to tell? The error broken 1 broken 2

  • A sure way to tell would be to replace the connector. Most probably the reason is the broken connector.
    – jksoegaard
    Feb 12, 2018 at 23:16
  • @jksoegaard I might just do that and post my findings. I'm not good at soldering. What part would I have to replace that ships with the connector? Feb 13, 2018 at 17:15
  • I assume you're talking about the display data connector. You'll have to replace the entire logic board, if you do not want to solder anything.
    – jksoegaard
    Feb 13, 2018 at 21:41
  • @jksoegaard last question, sorry to harp on it. It’s bent off the board but only a bit. Is it possible that I still broke it even though it doesn’t look that bad? It’s definitely raised. I’ll add a picture. Feb 18, 2018 at 18:45
  • Yes, it is possible. Check with a multimeter if there's a connection between each pin and the board (this is not however foolproof).
    – jksoegaard
    Feb 18, 2018 at 20:58


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