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  1. JeffC

    unknown part on 128k analog board?

    Are you sure it doesn't still work? I accidentally snapped the plastic housing on one and it still works fine.
  2. JeffC

    Using the Sun to restore a yellow Macintosh ☀️

    You would really need to be looking for that spot to even notice it. I'm curious what happens in the coming months. At least with Retro Brite, some people have said the yellow returns quickly even without exposure to light, and others have said it takes a long time.
  3. JeffC

    Using the Sun to restore a yellow Macintosh ☀️

    Wow, impressive results. I'm especially impressed there is no outline of the badge in the lower-right corner. How did you ensure the sides got even sun? Did you rotate throughout the day?
  4. JeffC

    IIsi odd sound issue with MacSD

    Well I was reading your message before I had coffee, so our mental states probably weren't far off. Thanks for the advice, I'll update after I get some time to test further.
  5. JeffC

    IIsi odd sound issue with MacSD

    Thanks for the info. Alternatively to powering through the USB plug, the board also has a pin header I could use to provide power. This might be easier than stripping a mini-USB cable and connecting those wires to a Molex connector. I think I may have a spare Molex cable in storage I could cut...
  6. JeffC

    IIsi odd sound issue with MacSD

    I was originally going to hack up a mini USB cable to power the MacSD through the mini USB plug, pulling power from the Molex connector for the original hard drive. However, I figured since I had the same symptoms whether I was running the MacSD off SCSI term power bodged from the DB25...
  7. JeffC

    IIsi odd sound issue with MacSD

    I am having a strange audio issue when I use my MacSD internally in my IIsi. I modified the IIsi to have term power to the internal SCSI connector by bodging from the DB25 external SCSI connector, and I also tried powering the MacSD with an external USB wall adapter. The machine works fine...
  8. JeffC

    #MARCHintosh project: Mac IIci 6-node Hermes II BBS

    Haha I think it's more that my mom hated my hobby and saw her opportunity. 😂 I remember I had a couple door games, but couldn't say which ones.
  9. JeffC

    #MARCHintosh project: Mac IIci 6-node Hermes II BBS

    Unfortunately no, when I went off to college all my old computer stuff magically disappeared. 🫤
  10. JeffC

    #MARCHintosh project: Mac IIci 6-node Hermes II BBS

    I ran a 2-line BBS with Hermes when I was a kid, on a '040 accelerated Mac II. The guy who wrote the Hermes software lived a couple streets from me, so I just walked up and bought my copy directly from him.
  11. JeffC

    I received a microscope for Christmas and opened up my battery bombed IIci to try it out.

    I forgot to put this in my last post. In your third photo, some of those traces are definitely gone and need to be replaced, but some are probably still good under the corrosion and lifted solder mask. You can carefully use an x-acto knife to scrape the solder mask off. If you can scrape off the...
  12. JeffC

    I received a microscope for Christmas and opened up my battery bombed IIci to try it out.

    I'm glad to hear you are making progress. Do you have more photos of the damaged area of the board? In your third pic there are definitely a couple rotted vias. Have you checked what they connect to, and come up with a plan to repair those? If the via just goes straight through the board and...
  13. JeffC

    MicroMac Technology MMXL99 SE-PL-CL Universal Accelerator Drivers?

    Did you find one to purchase, or are you going to build your own? Last I heard there is not a known source for the clip that clips over the 68000 on the Classic, it is a newer package type than the 68000 used in the Plus.
  14. JeffC

    I received a microscope for Christmas and opened up my battery bombed IIci to try it out.

    Eek yeah, definitely fixable but it will be tedious. How are you going to approach the diode repair, are you going to glue the parts in place and then bodge from there?
  15. JeffC

    I received a microscope for Christmas and opened up my battery bombed IIci to try it out.

    Is that the worst damage on the board? Are the diode pads still there, or did they come off entirely?
  16. JeffC

    My IIsi Power Supply is dying. Possible to fix?

    I had a IIsi PSU I recapped, it had a fair bit of corrosion that I left alone when I did the recap. It worked for a while, then just shut off mid-use and wouldn't stay running after that. I took it back apart, scraped a bunch of corrosion and added solder to the bare copper. It looks a lot...
  17. JeffC

    Corroded legs on IIsi CPU

    I ultimately wrote this board off and repaired another IIsi board I had. I did a bunch of work to this one and could never get rid of the death chime. I replaced the onboard RAM with known good chips, replaced all the ALS245s, beeped out all the traces going to/from the RAM and ALS245s. A...
  18. JeffC

    SCSI emulator for Mac Plus with '030 accelerator?

    My BlueSCSI v2 works great, for some reason the accelerated Plus just does not like my v1.1. I used the same SD card in both just to rule out card incompatibility.
  19. JeffC

    My Macintosh Iici with 50 MHz 030 card

    @MrPickles2169, do you have a Floppy EMU? @JDW is having trouble with his accelerated IIci (DayStar accelerator) not being able to read 400k or 800k floppies or images using his Floppy EMU. I am curious if it is a problem with accelerated IIci's in general, or unique to his machine/accelerator.