Resolved Hissing Audio Noise from a 17" MacBookPro 2008

Discussion in 'PowerPC Macs' started by bobesch, May 31, 2018.

  1. bobesch macrumors 65816

    bobesch

    Joined:
    Oct 21, 2015
    Location:
    Kiel, Germany
    #1
    Sorry, this is not a PPC problem but with regards to the Club 17 I'd like to ask for help in this forum.
    A few days ago I got a nice 17" MBP Early 2008. A nice machine - I was happy about it up to the moment I started to listen to music when hissing and whining noise came both from internal speakers and headphones.
    Then I booted via FireWire from another MBP in TargetDisk-Mode and there was no noise anymore.
    I swapped drives (SSD from that MBP I previously used for booting in TD mode into the MBP with faulty audio) booted from the now internal SSD-drive and the noise was back again.
    On the logic board there's the connector for the drive's cable sitting next to the connector for the cable of the I/O-board.
    I think, the problem must be related to the drive-connector or drive's cable or the I/O-Board or the connectors/etc on the logic board but I have no idea, how to proceed!?
    Swap the I/O-board, swap the drives cable or return the MBP to the seller?
    Has anyone else here encountered a similar problem?
     
  2. AphoticD macrumors 68000

    AphoticD

    Joined:
    Feb 17, 2017
    Location:
    Australia
    #2
    I have witnessed hissing (white noise) in PowerBooks from faulty RAM. Maybe it’s worth running through the Apple hardware test disc?
     
  3. bobesch thread starter macrumors 65816

    bobesch

    Joined:
    Oct 21, 2015
    Location:
    Kiel, Germany
    #3
    Thanks for your help. Yes, I did check RAM by installing both the RAM bricks from my working 17" Book into the faulty one with no success.
    Today I could solve the problem: installed the i/o-Board from another otherwise defective unit (which happens to be trapped into a Reset-loop in the middle of the booting process, but now became my backup for display, keyboard-assembly, speakers, fans etc for replacement-parts ...) and the hissing/whining sound was gone.
    The seller is a kind person and offered partial refund.
    So today I will remember as a sunny, happy & lucky day ...

    Quite interesting: that "new" and now refurbished 17" Book sports an antiglare glossy display. Strange. Didn't see that before and nothing to compare to the later/current dressing-tables ...
     

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