• Hello, Guest! Welcome back, and be sure to check out this post for more info about the recent service interruption and migration.

Search results

  1. PotatoFi

    IIsi No Chime, White then Black Screen

    I have the power supply out of the machine, and would like to test it's output directly. Is it possible and safe to bench test a power supply like this? I've shorted a couple of pins on an ATX power supply before to get it to power on - I'm not sure if these Macintosh power supplies work the...
  2. PotatoFi

    Macintosh IIsi Restoration

    At this point, it was time to test the machine! I reached around to the back and powered on the machine, and immediately heard the horrible grinding sound of a dying SCSI hard drive. I hardly had time to think about that though, there was a super loud POP! I totally panicked, and started...
  3. PotatoFi

    Macintosh IIsi Restoration

    Floppy drive time! I'm not going to go through all of the details here, as I've covered them in one of my previous threads. I'll hit some high points though! Basically, I like to partially disassemble these drives, clean them up, and make sure everything is lubricated. I find that the dust +...
  4. PotatoFi

    Macintosh IIsi Restoration

    At this point, the capacitor order from Digikey had arrived, so I got to work! I always bend the legs like this to capture the cap. Then solder, and clip the legs... And done! My wife even jumped in to solder one of them! Her normal thing is upholstery and sewing, but she was curious...
  5. PotatoFi

    Macintosh IIsi Restoration

    Thanks @3lectr1cPPC! I'm super glad to hear that you enjoy them. As of this writing, it's not done, but I am getting caught up on documenting the process. Hopefully, these threads help other people with their own restorations. --- And now, my least favorite part of any vintage computer...
  6. PotatoFi

    Macintosh IIsi Restoration

    Time for caps! When I first started recapping SMD boards, I thought they were super intimidating, but these days, I find SMD work like this to be far easier than through-hole stuff. I struggled through recapping my Fall 2007 Xbox 360 a few weeks ago - the most difficult recap job I've ever done...
  7. PotatoFi

    Macintosh IIsi Restoration

    Fast forward a few months, and I've finally got some time and energy to move this project forward. The first thing on the agenda is to recap the logic board, and to do that, we need to get all of the pads cleaned up. Remember that I used the "twist and push" method some months earlier. I used...
  8. PotatoFi

    IIsi No Chime, White then Black Screen

    Thanks @RFO, I'll try to find another place to take this measurement.
  9. PotatoFi

    Macintosh IIsi Restoration

    With everything out of the case, it was time for cleaning and retrobrite! I always like to do this out in the grass on a sunny day (I need sun for retrobrite anyway), and I mostly just use a toothbrush and some Dawn. Getting the parts super clean is not only good for their look - I think it's...
  10. PotatoFi

    Macintosh IIsi Restoration

    In May of 2020, a friend messaged me saying that he had some Mac stuff for me that he had picked up at his parents house. Needless to say, I was thrilled! Here's what everything looked like when I brought it home (but there are more details in this thread). Among the collection of stuff was a...
  11. PotatoFi

    IIsi No Chime, White then Black Screen

    Quick update: I checked the external floppy connector, and I am missing -12v. I took the PSU back apart, and the cap that I reversed on accident is one of the last components on the -12v rail before it exits the power supply. That trace connects to two separate big coil thingies and a diode...
  12. PotatoFi

    IIsi No Chime, White then Black Screen

    I just finished cleaning and recapping both the logic board and power supply on my IIsi. The fans turn on, and the hard drive spins up. The speaker on the machine clicks as it powers on, there is a white screen for just a second, and then it turns black. Nothing happens after that. It does shut...
  13. PotatoFi

    Which capacitors on the IIsi see 12v?

    I am restoring a couple of IIsi machines. I have gobs of 16v tantalum caps that I'd like to use up, and I have a handful of 24v tantalum caps. To avoid capacitor derating issues, I'd like to use my 24v caps in places where they will see 12v. For caps that only see 5v, I'd like to use my large...
  14. PotatoFi

    Macintosh SE SuperDrive Restoration

    Epilogue! It's time to finish the keyboard. And not just any keyboard... this is a beautiful Apple Extended Keyboard with ALPS mechanical switches. Not quite my personal favorite (that would be the M0116 with orange ALPS), but close. Everything is in good shape... But it does need a good...
  15. PotatoFi

    Macintosh SE SuperDrive Restoration

    Note: This post was lost in the Summer 2021 68kmla forum crash. I was able to find it on the Wayback Machine, copy the text over, and find the matching photos. The original post is from May 17th, 2021. Overnight, I plugged in a LocalTalk cable, and moved a bunch of applications and games over...
  16. PotatoFi

    Macintosh SE SuperDrive Restoration

    Note: This post was lost in the Summer 2021 68kmla forum crash. I was able to find it on the Wayback Machine, copy the text over, and find the matching photos. The original post is from May 17th, 2021. To set up the BlueSCSI, I started by formatting my MicroSD card with my modern macOS Big Sur...
  17. PotatoFi

    Macintosh SE SuperDrive Restoration

    Note: This post was lost in the Summer 2021 68kmla forum crash. I was able to find it on the Wayback Machine, copy the text over, and find the matching photos. The original post is from May 17th, 2021. At this point, it was pretty late... 11 PM or so. I needed to move pretty quick to get this...
  18. PotatoFi

    Macintosh SE SuperDrive Restoration

    Note: This post was lost in the Summer 2021 68kmla forum crash. I was able to find it on the Wayback Machine, copy the text over, and find the matching photos. The original post is from May 17th, 2021. After nearly a year, I've finally got motivation to get this project done: a deadline. This...
  19. PotatoFi

    Macintosh IIsi Retrobrite Method?

    Immersion will be just fine on the IIsi. I did my IIsi and didn't see anything flake off. I had it all documented, but sadly, it was lost in the forum crash.
  20. PotatoFi

    New preview of Classic 68k Mac utility - standalone HTTP file downloader

    I think it's for downloading stuff! Give it an HTTP link to a .SIT file or whatever, and it will download it?
Top