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  1. Stephen

    Modern G4 Cube PSU replacement?

    The new Apple USB-C power bricks for the M1 Max / Pro laptops are 28v @ 140w. This is more than enough to run a G4 cube (which is not using an ADC monitor). Older USB-C adapters may be sufficient in some circumstances but I don't believe they have sufficient wattage / headroom for spikes. The...
  2. Stephen

    Mac Plus and HD20

    Interesting reference, I hadn't see this before. I wonder if it has any merit?
  3. Stephen

    Mac Plus internal SCSI: noninvasive edition

    I’m happy you were able to make progress - frankly, the Cloney Clip has many barriers to entry and failure points. With the 3D printing, pogo pins, and finicky cabling its an accomplishment. There’s a simpler iteration I’m exploring but it’s more “one time use”.
  4. Stephen

    revive a macintosh 512k

    I haven't had any timing issues with RGBtoHDMI, but to be fair I've only tested on the 128k, 512k, Compact Mac, and "dabbled" with the SE. It's just too bad it's not easier to buy the RGBtoHDMI premade or they would be a massive hit.
  5. Stephen

    revive a macintosh 512k

    Check out RGBtoHDMI.
  6. Stephen

    Weller WE 1010NA Backlight Mod (Open Source)

    I have no clue if this is helpful to anyone here, but I made a backlight mod for the Weller WE 1010NA. I have a few boards for sale ($10 + shipping) but the project itself is open source and designed so you can order them pre-assembled from JLCPCB. The goal of the project was primarily to show...
  7. Stephen

    ROMinator Update

    I've made a few small updates to the original ROM-inator project by Big Mess O' Wires. Anyone interested can find the details in my GitHub repo — if you enjoy this project please leave a star, it's the closest I can get internet karma 😅 Please remember, the original ROM-inator is deprecated and...
  8. Stephen

    Open Source 68-Pin 512kb VRAM

    Appreciate it! Do you have more information I can refer to? Could be interesting. I believe the 512k is backward compatible with 256k; only the first half of the memory gets mapped. Admittedly, I don't know for certain.
  9. Stephen

    Open Source 68-Pin 512kb VRAM

    Is there something particularly grievous about the project I've shared? Your responses sound very snarky! The EasyEDA source files are in the repo. There are tools to convert the EasyEDA files to other formats (e.g., KiCad). Because I do not use other tools I cannot confirm the accuracy of...
  10. Stephen

    Open Source 68-Pin 512kb VRAM

    The project was designed in EasyEDA. Thanks for your feedback! edit: EasyEDA source JSON file is in the "gerbers" directory and the first paragraph of the repo's readme has a link to the open hardware source, which includes access to the schematic sources. (y)
  11. Stephen

    Open Source 68-Pin 512kb VRAM

    I've released the schematics, gerbers, and PCB files for a VRAM version based on the Apple 820-0605-A 512kb VRAM (GitHub). If you appreciate this project I encourage you to star the GitHub repository and share it with friends.
  12. Stephen

    Color Classic - No Video

    I have a color classic which appears to have a problem with the analog board. Would anyone be willing to offer some advice on where to start? Debugging so far: Checked the CRT on another (working) CC and it works fine! Checked the logic board on the working CC and it works fine...
  13. Stephen

    Modern G4 Cube PSU replacement?

    I had this problem myself recently. My (temporary) solution is below. This is powered by my 30v/10a bench power supply set to 28v. I can see from the power supply that at idle the G4 Cube draws ~1 amp (28 watts) without an Apple Studio Display. With a 27" Apple Studio Display the G4 Cube is...
  14. Stephen

    G4 Cube - Flashed GPU

    I'm reasonably new to the world of GX macs but recently acquired a G4 Cube and would like to leave the world of ADC behind me. Would someone be willing to flash, test, and ship a GPU to me? I'm happy to pay for both the card and service or just service alone if you prefer I get the card. Oh...
  15. Stephen

    DIY Mac Plus ROM Chips (Giveaway)

    I recently posted a tutorial which covers how to make replacement ROMsI recently posted a tutorial which covers how to make replacement ROMs for the Mac Plus. It's directly applicable to earlier compacts, such as the 128k and 512k. The process is similar for the Macintosh Classic & Classic...
  16. Stephen

    Replacement Battery Cover for Mac Plus (Open Source 3D Files)

    I've recently published the open source files for a dimensionally accurate battery cover replacement. You can find the files here or buy 3D prints here ($0.50 markup over manufacturing costs).
  17. Stephen

    Macintosh Plus - Analog Board Clicking

    I took a few days away from this — the replacements parts removed the click but now I get nothing at all! I'm including my list of replacements if it's of any help; the purchases were based on common problems from the dead mac scrolls and their modern equivalents. If someone is more experience...
  18. Stephen

    Macintosh Plus - Analog Board Clicking

    A few months ago I bought an analog board (PN: 630-0102-J) knowing it did not work. I was hoping it could be resolved with a good cleaning, fresh caps, and maybe some reflowed solder joints but alas — here I am. I have replaced all of the caps I have reflowed all of the solder joints (yes...
  19. Stephen

    Macintosh Plus - Repair Help

    The same thought crossed my mind while I searched for more information about them. Sounds like the best recommendation right now is to buy replacement ram? Thanks for including the additional information (reference guide, calculation and example). I tried a bunch of iterations but the only...
  20. Stephen

    Macintosh Plus - Repair Help

    Hello, I purchased this Macintosh Plus knowing there was some Bad Things™ going on. I describe the steps I've taken below but I need suggestions from more experienced folks. Before we begin, I want to point out that I did not recap the logic or analog board — they appear pristine. I've recapped...
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