Looking for a Color Classic Logic Board...

Discussion in 'Apple Collectors' started by IIe, Mar 27, 2011.

  1. IIe macrumors newbie


    Aug 21, 2006
    Detroit, MI
    ...or someone who know's how to repair the SCSI interface IC.

    I have acquired a color classic about a year ago. Since then, I have only been able to boot into it once. The CC will not recognize the internal hard drive.

    I've tried swapping with another 80MB SCSI HD, and booted with the install disk, but the CC wont recognize the HD. I tried terminating the SCSI port on the rear of the machine... which seemed to allow the CC to recognize the HD. The CC was able to recognize the HD and it allowed me to begin installing System 7, but after about an hour the machine (I haven't been able to recreate this scenario since).

    I've replaced the PRAM battery, which didn't help my situation at all... and I have also tried blowing out the logic board too.

    After all of this, I believe that my SCSI interface chip is bad... but I don't have any experience soldering on a double sided PCB.

    Does anybody have any tips on how I could/should remedy this situation?
  2. MacTech68 macrumors 68020


    Mar 16, 2008
    Australia, Perth
    If you can take a close up pic of the logic board near the SCSI IC and (more importantly) the circuit board of the hard drive, I may be able to provide some guidance.

    SCSI termination is an odd thing and unless you're dealing with an original drive that hasn't been in an external case or had it's termination altered, there are some pitfalls.

    The model of the drive would also be handy.

    You may have a faulty drive or even a stiction fault.
  3. macEfan macrumors 65816


    Apr 7, 2005
    Forbidden, you do not have access to that server
    I think I might have one but I have no idea if it works. let me know if you still need one.

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