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  1. Important Information

    1. The 68kMLA Forum Rules   (10106 visits to this link)

      To quote vintage Apple manuals: "Read Me First!"

  2. Community Connections

    1. General 68kMLA News & Stuff

      What's going down in the barracks.

      3972
      posts
    2. Conquests

      Discuss your latest vintage Mac finds!

      39511
      posts
    3. Trading Post

      Feel free to trade all of your Mac goodies here with all honest intentions. The website provider assumes NO liability, so buyer beware! Please see this topic for more information.

      52997
      posts
  3. Projects & Hosted Forums

    1. RetroChallenge

      What can you do given only one month and strictly "retro" hardware? Find out with RetroChallenge!
      http://retrochallenge.org/

      1486
      posts
    2. 68kMLA Wiki

      The creation and maintenance of the 68kMLA's information repository.
      http://68kmla.org/wiki/

      496
      posts
  4. 68k Model Forums

    1. Compact Mac

      Macintosh, 512k, SE, etc.

      45882
      posts
    2. Mac II, Quadra & Centris

      Just think, having a Quadra 950 in 1992 would be like having a Mac Pro today… except with more slots, more expandability, and on-board SCSI!

      13029
      posts
    3. 68k LC & Performa

      Ah, the consumer computers!

      7954
      posts
    4. 68k PowerBook

      From the Portable to the 190cs.

      9855
      posts
  5. PowerPC Model Forums

    1. NuBus Power Mac, LC & Performa

      The NuBus architecture gets a new brain!

      2671
      posts
    2. PCI Power Mac & Performa

      The PPC comes of age and adopts the industry standard expansion slot.

      5881
      posts
    3. G3/G4/G5 Power Mac, iMac & eMac

      From the Beige G3 to the quad-core G5, via various iMacs!

      13720
      posts
    4. PPC PowerBook & iBook

      All that power in a laptop? Never…

      8965
      posts
  6. Everything Else…

    1. Apple I, ][, /// & Lisa

      Not really 68k Macs, but certainly Vintage!

      7388
      posts
    2. Newton

      The best PDA ever finally gets its own forum!

      1066
      posts
    3. Software

      Includes system stuff, productivity, emulation, design, and games for pre-OS X Macs!

      17461
      posts
    4. Hacks & Development

      Yes, it's back! Hardware hacks/modifications and software development for Mac OS.

      18536
      posts
    5. Peripherals

      Anything you can hook up to your Mac or stuff into it as an interface!

      14523
      posts
  • Posts

    • Made a major purchase that I wanted ever since I first heard about the 550c from the Cult of Mac book years ago -   I picked up a Powerbook 550c with the box and manuals for a grayscale 520 for $350 shipped from Japan.   It had some minor cosmetic damage to the screen from a leaking PRAM battery ("vinegar syndrome"), unfortunately, but otherwise is in pretty great shape! Already upgraded it to 40MB of RAM and the original 750 MB HD works great.    
    • As mentioned it was an official upgrade, replacing the ROMs and the IWM for a SWIM, usually replacing one of the floppy drives with an FDHD unit (complete with a sticker to go on the case) and leaving the other as an 800k.   They rearranged the acronym with the FDHD system: originally an Integrated Woz Machine, it became the Super Woz Integrated Machine. I guess it flowed better than SIWM would have.
    • I used to have the 72-pin to 30-pin expanders, but I gave them away (don't remember who.)   However, I have a bunch of the 30-pin to 30-pin expanders so you can use lower capacity SIMMs.  I also have a set of SIMM doublers for the IIfx that lets you use 2 SIMMs per slot.
    • Don't use cleaning disks on 400k or other single-sided drives or you'll damage/dislodge the pressure pad and render the drive unusable. The pressure pad is a little felt pad that, on the 400k Sony drives, is on the arm on the top of the drive directly above the head. This pad presses down on the disk surface to ensure full contact with the head. If this pad is missing, it will not generate enough pressure to properly read the disk and may scrape up the top of the disk causing a lot of debris to be generated. Cleaning these drives requires disassembly and manual cleaning of the head with a lint-free swab and special cleaning fluid, but you can get away with carefully using a cotton swab and 90% iso alcohol. 70% iso also works in a pinch. You'll also want to check that the pressure pad is still properly attached. If it isn't it may be in the drive somewhere.   Even though your disk media may not look bad, it may be heavily shedding particles and/or binder material all over the heads of your drives. I probably wouldn't try using it again.
    • @joethezombie Would love to be the first to purchase a 128MB set once you have them ready.  I have a bit of extra cash right now.
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