Recent content by JDW

  1. JDW

    Manifested worries about the Y2K38 and Y2K40

    It is a very important topic, and as such, I would encourage you to post in the forum more because you are helping us to think about these matters. What's interesting is that some people working the problem say things like: "I am not sure that anybody will use HFS/HFS+ after 2040." Which of...
  2. JDW

    Budget Oscilloscope Recommendation?

    I'm one of those exceedingly (over-the-top?) meticulous people who spend a couple weeks reading every review and watching every YouTube video I can find on something before I buy it. Reading the technical documentation for a technical product is also a must. But I do that mostly when buying...
  3. JDW

    IIci exhaust fan duct thingy

    Good thermal cameras (what they call high-resolution types) are rather pricey, which is why excessively frugal penny-pinchers like me tend to hold out for what seems to be like an eternity before buying such gizmos. The same was true of my Hakko FR-301 desoldering gun. I held off for YEARS...
  4. JDW

    IIci exhaust fan duct thingy

    If you have a thermal camera, you could leave it running with the top case on for about 1 hour, then pull it off and quickly measure the temps on your cards. You could repeat with that test with fan add-on. And if it is easy to flip the fan, you could do a third test. Those 3 temp...
  5. JDW

    IIci exhaust fan duct thingy

    Wow! What a nice idea! Pretty nice how ChatGPT was able to create something usable for you. I too am not adept at 3D design, so having a digital friend who can assist with that is handy! Noctua fans blow out the sticker side though... And because your main PSU fan also blows outward, are...
  6. JDW

    VGA Mod Mystery: the impact of isolating pin 25

    Hmmm... You have a different capacitor part number than I do. Mine is blue and shaped slightly differently (with no crack, of course)... Because you confirmed your machine working, that indicates the plastic housing of your capacitor cracked, but nothing inside was affected. Even so, if...
  7. JDW

    HD20 Init for Mac II, IIx, IIcx, and SE/30

    Not a lot, I suspect. A brilliant 68K programmer simply has to “Tinker Different.“ :-)
  8. JDW

    VGA Mod Mystery: the impact of isolating pin 25

    @Paolo B So you’re saying that when you heard the pop and saw the CRT discoloration problem, you had the rear case removed? The reason I ask is because how the very back and bottom of the machine (the metal shield) sits on your desk is crucial because that can impact the small, curved pieces...
  9. JDW

    VGA Mod Mystery: the impact of isolating pin 25

    Sometimes posting photos helps to attract much needed attention to a thread, so here are some very high resolution photos of the top and bottom of my Analog Board, as well as zoom shots of the 68.4V VGA Mod (Sense Lines & Horizontal Deflection Voltage areas). You'll also see I have the stereo...
  10. JDW

    VGA Mod Mystery: the impact of isolating pin 25

    @Paolo B , because you said you won’t have the ability to test for a few more weeks, I’m going to write a few words below that take this thread back to the question I asked in my opening post because I’d like to get some thoughts from other CC owners. I’m in the middle of filming a video about...
  11. JDW

    VGA Mod Mystery: the impact of isolating pin 25

    Wow! The fact you desoldered that entire connector is incredible! I really must go to work now, but I just wanted to post a little extra for you, so you have something to ponder. The book Doping Mac, which @Kay K.M.Mods sells and recommended to me, shows that when doing the 84V 13" Hi-Rez Mod...
  12. JDW

    VGA Mod Mystery: the impact of isolating pin 25

    DV means diode, and I think I see the Cathode line marking on the side closest to that DV11 silkscreen. Determining the type of diode and its part number is crucial for replacement. I see that @Mu0n has a nice photo here...
  13. JDW

    VGA Mod Mystery: the impact of isolating pin 25

    All of us who have done the 68.4V "VGA Mod" on our Mac Color Classic ANALOG BOARDS know that you must change the SENSE LINES, and that involves ISOLATING pin-25. I did that, along with @Branchus and @Kay K.M.Mods and countless other people through the years, and none of us have any problems...
  14. JDW

    Radius Pivot PrecisionColor CRT (Model 0356)

    @dramirez I have no idea what he was linking to originally, but I see "thunder_202306" appearing in his URL to Archive dot ORG, so I did a search and it found 13 PDFs pertaining to Radius displays here: https://archive.org/details/thunder_202306/Full%20Page%20Display%3Ags/ Screenshot of the...
  15. JDW

    Hello from someone who likes to know more :)

    Welcome to Tinker Different! Thanks for sharing, and I certainly hope you enjoy the forum!