Jump to content


  1. Important Information

    1. The 68kMLA Forum Rules   (10387 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.

    2. Conquests

      Discuss your latest vintage Mac finds!

    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.

      • dcr
  3. Projects & Hosted Forums

    1. RetroChallenge

      What can you do given only one month and strictly "retro" hardware? Find out with RetroChallenge!

    2. 68kMLA Wiki

      The creation and maintenance of the 68kMLA's information repository.

  4. 68k Model Forums

    1. Compact Mac

      Macintosh, 512k, SE, etc.

    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!

    3. 68k LC & Performa

      Ah, the consumer computers!

    4. 68k PowerBook

      From the Portable to the 190cs.

  5. PowerPC Model Forums

    1. NuBus Power Mac, LC & Performa

      The NuBus architecture gets a new brain!

    2. PCI Power Mac & Performa

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

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

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

    4. PPC PowerBook & iBook

      All that power in a laptop? Never…

  6. Everything Else…

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

      Not really 68k Macs, but certainly Vintage!

    2. Newton

      The best PDA ever finally gets its own forum!

    3. Software

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

    4. Hacks & Development

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

    5. Peripherals

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

  • Posts

    • Note: I wonder if the admins could create a Repairs or Recaps forum so that we can collate and capture knowledge like the below before it is lost. 
        https://jbretro.wordpress.com/2019/07/10/m1296-recap/   The aim of this post is to create a reference online of capacitors used in the main and neck board of the Apple 12″ Macintosh Monitor (M1296).  Attached is a spreadsheet of capacitor values that has been created by the writer and verified / checked for accuracy and show photos of the recap.
      This monitor’s design has the front bezel match the curve and width of certain Macintosh computers, famously the LC line and also IICI.  It is a fixed resolution 512 x 384 @ 60 Hz RGB monitor which used composite sync.  Internally it is a Japanese design by Matsushita and uses a shadow mask CRT tube.  It is not compatible with traditional analogue RGB video signals, even when fed clean C-SYNC.   I found the build quality to be strong and pleasing to repair.  My monitor featured vertical collapse when turned on and was known to have little use from new, cosmetically perfect and from a single owner in Sydney, Australia.
      Capacitor C418 was the failure point for me, along with rotted traces from heavy capacitor leakage.  The main board was indeed wet and electrolyte pooling in the grooves of the case.   I chose to re-cap everything including the neck board as clearly I felt like a challenge.  After repairing some traces and verifying my work, the monitor was tested as working ‘first go’.  The image remains pristine – clear, converged well and bright.   PDF spreadsheet M1296 Repair Recap rev 2.xlsx (attached)   Apple 12″ Macintosh RGB Monitor M1296 Main board uF V C401, C413, C502, C523 1 50 C416 22 25 C418 2200 6.3 C420, C519 220 25 C501, C526 47 50 C507, C520, C522 10 50 C512, C414 100 50 C517 100 25 C518 10 160 C521 82 160 C525 0.1 50 C908 (Comment: Negative Black) 220 450 C914 22 100 C915, C921 10 100 C919 330 180 C920, C417 2200 35 Neck board uF V C203 1 50 C205 220 100 C206, (C517 from main board) 100 25 C2B4, C2G4, C2R4 2.2 50 C2R2,C2R1,C2G1,C2B1,C2G2,C2B2 47 25 C6B5, C6R5, C6G5, C207 1 160 C6R3, C6G3, C6B3 47 25 m1296-repair-recap-rev-2.xlsx.pdf
    • What was the mechanical issue, the thickness of the ROM SIMM?   I ended up swapping the socket on a couple of my logic boards (somewhat invasive but worth it to me) and made a video on how to do it:    
    • @Trash80toHP_Mini Nah, people should know who they're dealing with. Not the first time I've seen this behavior from "Intertial".   Has anyone pulled the trigger on this new SCSI drive replacement? I was thinking of getting another SCSI2SD, but I want to try the MacSD to see how it compares. It seems like it could be a game changer, but currently there's unfortunately little info about it.
    • From reading around and seeing prior issues, this would appear to be a Vertical IC failure. Thanks for the help. 
    • The linked mouser project looks good to me too.