Recent content by mac27

  1. mac27

    Power Mac G4 MDD FW800 power issues

    Best of luck - if you do end up needing a replacement mobo, I might be able to help out. Yeah that's a bummer. I wish I could be more specific on what exactly the issue is/was, other than "needed new motherboard". Maybe someday I'll give it to someone who can actually diagnose the original...
  2. mac27

    OEM iBook G3 "Custom Software Restore" discs

    So I came across this eBay listing, for a set of four OEM software discs for an iBook G3 that are labeled as "Custom Software Restore" 1 through 4: https://www.ebay.com/itm/205997149246 I was rather intrigued right away - the first thing that caught my eye was the fact that they're orange...
  3. mac27

    Power Mac G4 MDD FW800 power issues

    The replacement motherboard arrived today; got it installed and that did the trick. Woohoo! My first time actually seeing it boot in several months, at least. So, what can I say about this? - having a motherboard randomly fail with no warning signs is certainly a new one for me, and the...
  4. mac27

    iBook G3 Clamshell vinegar syndrome

    I can't tell which of your photo(s) is of the original, but you're saying they both had the connector oriented in the same direction?
  5. mac27

    iBook G3 Clamshell vinegar syndrome

    Yeah, that person disappeared a few years ago. See this thread on Reddit for more information.
  6. mac27

    Power Mac G4 MDD FW800 power issues

    Thanks. So to update my list from above, I've now (in addition) also tried: - Resetting PMU (3 or 4 times now in total) - Re-seating CPU daughterboard and cleaning connections on both sides with Deoxit - Applying pressure to heat sink in various fashions during power-on @MBongo has very...
  7. mac27

    Power Mac G4 MDD FW800 power issues

    Thanks for these suggestions. I've tried many configurations of RAM, and just tried again with no stick in J20 to make sure. No change (and still no warning beeps with no RAM installed at all, which is odd). I also tried various pressures on the heatsink manually during boot, no change with...
  8. mac27

    Power Mac G4 MDD FW800 power issues

    Close-up of the pins on the daughtercard (top) and mobo (bottom) - they look normal to me:
  9. mac27

    Power Mac G4 MDD FW800 power issues

    Just tried that as well (twice, about 5-10 minutes apart with power-on in between), no dice unfortunately. Interestingly, there is a section in the service source manual that describes this exact set of symptoms: I've done the PMU reset, re-seated the cards, and I also reseated the processor...
  10. mac27

    Power Mac G4 MDD FW800 power issues

    I'm troubleshooting a FW800 MDD (Dual 1.25 GHz) with some weird behavior and am in need of some help on this one. Description of the problem: The machine turns on / powers up; fans spin; HDDs spin up but then slowly spin down to a very low RPM (abnormal behavior). There is no boot chime and...
  11. mac27

    iBook G3 Clamshell vinegar syndrome

    After a break from this project over the holidays I went ahead and snipped the (very tiny) plastic tabs/ridges off of the connector on the cable harness and got the new panel reinstalled back into the iBook once again. Ta-da ... Worked like a charm. No fried motherboard or lack of video...
  12. mac27

    iBook G3 Clamshell vinegar syndrome

    Well, finally a step back in the right direction. Got the replacement motherboard installed and I have an iBook with operational display again (granted it is the original panel with the vinegar syndrome, but still a huge improvement). So I am now more or less back to where I started. It is...
  13. mac27

    iBook G3 Clamshell vinegar syndrome

    Yeah, this has been quite a mess. But that's very similar to how I manage mine. I was finally able to locate a replacement FireWire motherboard which should be here in a few days. Lesson learned - just because the connector fits does NOT mean it is compatible. Hoping the new mobo will get...
  14. mac27

    CompleteSet - a resource for vintage Mac collectors and enthusiasts

    Neat. While something like this could be useful in an indirect way since it lists out all of the exact tech specs, etc., I don't think it contains any info that I would be ingesting directly into CompleteSet. Yeah the first sheet does have some G3-G5 era info that would be useful to me if it...
  15. mac27

    iBook G3 Clamshell vinegar syndrome

    Well, the replacement motherboard fell through so this project is unable to proceed until I can find one. If anyone has a spare 366 MHz FireWire iBook G3 clamshell motherboard, please do let me know. A 466 MHz board would also work, as would a parts machine at a reasonable price.
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