Onyx: Replaced logic board 2x, still 3 beep RAM failure

Discussion in 'PowerPC Macs' started by ytty, Oct 19, 2010.

  1. macrumors newbie

    Joined:
    Aug 26, 2010
    #1
    Originally burned several resistors beyond repair on an Onyx VGA upgraded with 667 Mhz. Replaced with a used 550 Mhz logic board from reputable dealer, upon startup received 3 beep RAM failure. I swapped memory sticks with two brand new, still 3-beep RAM failure. Attempted second logic board swap with a second 667 Mhz board I purchased, still 3-beep RAM failure, all combinations of RAM sticks in all positions--I've read most posts on the subject. I do get one beep with no sticks.

    These boards were certified tested, two bad apples seems indicative of a deeper problem, any suggestions?
     
  2. macrumors 6502a

    raysfan81

    Joined:
    Oct 6, 2009
    Location:
    North Carolina
    #2
    What is an onyx? Do you mean the Graphite iMac G3 or the iBook G3 by any chance? Or do you mean the early(er) Powermac G4 towers?
     
  3. macrumors 68000

    Hrududu

    Joined:
    Jul 25, 2008
    Location:
    Wichita KS
    #3
    Its the code name for the 2nd generation of Titanium Powerbook G4. Its the 550-667MHz model that still had VGA instead of DVI video out.
     
  4. thread starter macrumors newbie

    Joined:
    Aug 26, 2010
    #4
    Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_1 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Mobile/8B117)

    Yes, it's a PowerBook G4.
     
  5. thread starter macrumors newbie

    Joined:
    Aug 26, 2010
    #5
    If else, could someone direct me to a more technically oriented forum? Thanks!
     
  6. macrumors 68000

    Hrududu

    Joined:
    Jul 25, 2008
    Location:
    Wichita KS
    #6
    Honestly, I looked over the service manuals for that TiBook and I can't find anything that would be helpful. If you've already replaced the logicboard and RAM you just need to replace the computer. You can get those old TiBooks for around $35 these days.
     
  7. thread starter macrumors newbie

    Joined:
    Aug 26, 2010
    #7
    Thanks for the effort bud.... $35....what??? I paid more than that for the logic board!
     
  8. macrumors 68040

    MacHamster68

    Joined:
    Sep 17, 2009
    #8
    thats normal the parts are much more expensive even used, compare to a used PowerBook , but that is still the case , if you would have to buy all parts to build a 27inch iMac today you would pay easy double what a complete one cost at the apple store
    and even if you bought the logicboards "new" they had been sitting in some shelf since nearly 10 years already which doesn't make parts better

    but its good to see someone who loves his powerbook so much that he doesn't throw it away on ebay for parts ,only because parts are more expensive then the whole powerbook , gives a bit of hope that not everyone see the old Mac's as things only good for a museum today
     
  9. thread starter macrumors newbie

    Joined:
    Aug 26, 2010
    #9
    with numbers to crunch, every terminal helps :)

    You know, as recently as 2 years ago I used this Powerbook for a live DJ gig with Serato when my MBP was down....underpowered but STILL more stable than a PC at the time
     
  10. macrumors 68000

    Hrududu

    Joined:
    Jul 25, 2008
    Location:
    Wichita KS
    #10
    I got my 867MHz TiBook for $50 and my 667MHz for $35. Both on winning eBay bids.
     
  11. macrumors regular

    Joined:
    Oct 16, 2010
    #11
    Try booting one time with all RAM removed. After powering off, reinstall the RAM to its correct position. I know it sounds counterintuitive, but it does sometimes work.
     

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