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  1. JDW

    G4 Cube VRM

    Unfortunately, I don't have a schematic of the VRM to know which pins are what. Knowing that is very important if one wishes to test the VRM outside the Cube. But you're right, it does make good sense to test it outside the Cube if you are able to find out how to properly identify the voltage...
  2. JDW

    Macintosh SE 800k CRT adjustement

    I talk about that from 53:14 in my video below, which pertains to the SE and SE/30...
  3. JDW

    Announcing BlueSCSI Toolbox – Web Edition

    Believe me, I've spoken to Steve Chamberlin about this via email and in the comments section of the FloppyEMU page for many months. Even though "it has nothing to do with Intel vs. Apple" in theory, I can tell you from PRACTICAL EXPERIENCE that it actually does have very much to do with an...
  4. JDW

    Announcing BlueSCSI Toolbox – Web Edition

    Well, what I do in terms of using my MacSD, BlueSCSI or FloppyEMU is yank the SD card, then put it into an Intel Mac (because, very sadly, Apple Silicon Macs make it 100% impossible for me to avoid "fragmentation"), transfer files, then put the SD card back. It's fast and works well (except for...
  5. JDW

    Announcing BlueSCSI Toolbox – Web Edition

    In reply, I should mention that your opening post says this: So we need to define "older machines" and "retro computer." Specifically, what machines would become incompatible if you "add some JavaScript to make it feel more modern"? Once that is known, people would probably provide...
  6. JDW

    Crucible for the SMC ROM SIMM

    @Kay K.M.Mods & @Drake Those are some very cool icons!
  7. JDW

    PowerBook G3 Wallstreet/PDQ flaky power input jack

    I'm watching this thread with interest because I too a PDQ (Pretty Darned Quirky) and it has power-on issues too.
  8. JDW

    REVIEW of Mockingboard 4c for Apple IIc

    The upside is that I broke my tabs so other people don't have to! :-) Naturally, I didn't do it on purpose. I really was given bad advice. I don't see how some people contend that drop-to-open works on that MacEffects case. It didn't for me, obviously. But it does work fine on the stock...
  9. JDW

    Color Classic Speaker Issue

    @YMK said he didn't experience noise, and he did the component swap. However, it does not seem that the legs on his replacement components were very long... https://tinkerdifferent.com/threads/color-classic-analog-board-trouble.2367/#post-21638 So I am wondering if the raising up of larger...
  10. JDW

    REVIEW of Mockingboard 4c for Apple IIc

    My first Apple II was acquired in October 2023. Being a Mac guy since 1984, I was accustomed to "good audio." There was nothing about any Macintosh I ever used that made me think, "Wow, this audio is bad!" But when I first tested the IIc with music and gaming apps, I was really quite shocked...
  11. JDW

    Need schematics for IIci, SE30 and Portable

    IIci schematic sent to you via PM just now. Here are SE/30 Schematics. Here are Macintosh Portable Schematics (5120)
  12. JDW

    Macintosh Portable

    Yes... https://tinkerdifferent.com/resources/macintosh-portable-5120-schematic.133/
  13. JDW

    Color Classic Speaker Issue

    "Messed with the metal shielding" how, specifically? The fact that "messing" changed something is a bit concerning.
  14. JDW

    Announcing BlueSCSI Toolbox – Web Edition

    Wow! A great way to end 2024. Always love to see ongoing development of an existing product in the vintage computing space. It really keeps the fun alive and enhances product usefulness too! Best wishes to all of you as we ring in the New Year very shortly!
  15. JDW

    Color Classic Speaker Issue

    @YMK I'm rather embarrassed to say that even though I bought all the components for the swap, I've actually still not made time to do it yet! That's something I plan to do a video on, but it's not done yet. However, since you have done the component swap, did you experience any noise increase...
  16. JDW

    Macintosh PortraitDisplay Recap and Geometry Adjustments

    It was the same when my Micron Xceed card had VRAM related issues. Switching between color and grayscale or switching between number of colors would sometimes resolve the problem. But ultimately, replacing the defective VRAM chip was the solution. Congrats on the purchase of that excellent...
  17. JDW

    Macintosh PortraitDisplay Recap and Geometry Adjustments

    Will there be a part II video where you show us the same desktop windows again to see if the problem you showed at the beginning of your video vanishes with that different video card? Before you even mentioned having discussed it on Discord, I too thought it might be the video card —...
  18. JDW

    Massive (filthy) find in South Carolina

    Cost is a valid consideration, and bulk buys would be nice if they generated discounts, but I must say this. I've tested v2 with a wide range of Macs, and even on a slow, stock 8MHz Mac SE, benchmark apps across the board show the v2 to be faster. Noticeably? Well, that would depend on you. I...
  19. JDW

    Massive (filthy) find in South Carolina

    Oh, that photo was of a IIfx? I don't have a IIfx either. But what I wrote about tantalum capacitors still is correct info. If that C1 is across a 12V rail, it explains the burn.
  20. JDW

    Massive (filthy) find in South Carolina

    I do not own a IIsi, but it would be interesting to know more info about C1, such as: 1. What is its capacitance and VOLTAGE RATING. 2. Does C1 see +12V across it at any time? (Is it on the 5v or 12v rail?) I've seen so many bad designs, even from Apple, using under-rated SOLID tantalum...