Recent content by JDW

I've never taken my little UFO guy apart to find out, but using my thermal camera I see it's one of the hottest parts of the board (61.1°C, after machine was on for 1 hour), which tells me it must be a heatsink of some sort. Here's a card feature side-by-side chart:

Radius Thunder 24/GT NuBus video card (I have one, see photo below) along with the DSP daughtercard for Photoshop acceleration. When combined together, the two cards are called the Radius Thunder IV GX 1152. Higher end cards in the Thunder IV GX series simply have more VRAM and support higher...

I found this chart some months ago and added corrections and extensive enhancements while retaining the same charm as the pixelated original. Fun and informative! Please let me know if you spot any errors I missed. HOW TO DOWNLOAD: Click the blue button in the upper right of this page.

What a wonderful story. And what wonderful photos too! Such a clean machine. It's not just a recent clean-up either. Seems obvious to me that machine was well cared for through the years. When you have basically a single owner (same family) who obviously knows how to properly store...

Found another right-side cracked hinge holder on Yahoo Auctions Japan completed listings today: The crack point is exactly the same as mine, but as you can see above, the top half of the hinge holder is completely missing. My Portable is now disassembled for the filming of my video. I've...

Thank you for confirming. You can therefore flash any kind of Mac ROM SIMM now, regardless of whether the chips are removable. Now that our dialog has concluded, I wish to say a few words to avoid offended anyone. I like the SMC team members. I like the CayMac guys. I like Downtown Doug...

What programmer do you have or are thinking about buying? Basically you have two choices: ROMmate Programmer v2, which uses this software on a modern Mac or Windoze (proper spelling). T48 individual chip programmer (not a SIMM programmer), with the Crucible software. I have both programmers...

Oh, wow. You’re very kind. Thank you. And you do have some excellent photos there. It’s actually hard to find good photos like those, especially of a working machine. Most people who shoot photos that I’ve seen keep the screen off, perhaps because the machine is broken. Yes, I am aware and...

I'm going to answer my own question with this photo of the backlight diffuser behind the LCD on my M5126 Portable... That textured top makes it diffuse light from the CCFL tube on the left side, but it will also diffuse light hitting the screen when the backlight is off. Because of that, the...

Thank you so much for your input! I sometimes use ChatGPT as an errand runner because it can search multiple websites faster than I can, but I vet what it tells me. So my spreadsheet is by no means ChatGPT generated. I've spend many, many hours going through old books, newspapers and original...

@T-Man Can you measure the ball diameter of your PB170's trackball? @David Cook Can you measure the ball diameter of your PB100's trackball? I confirmed today that the Mac Portable uses a 33mm ball. I ask because there's a lot of bad info out there. Even ChatGPT said the ball used in...

Here are measurements I made today. Just FYI, for those of you who appreciate FYI's, that is. :-) Between Metal Inner Edges (see photo above) • Diagonal: 26.5 cm (10.43") • Width: 22.1 cm (8.70") • Height: 15.5 cm (6.10") PCB Size (see photo above) • Width: 26.1 cm (10.28") • Height: 17.6...

Ah yes, Kai! You mean this brilliant fellow... But of course, a 3D CAD genius like him would be need for reproducing the entire subframe assembly. But even if it was reproduced, could it easily be printed in polycarbonate (required for strength)? Even if it could, we still need to figure...

Found photos of another person's broken right-side hinge holder. Poor guy tried and failed with 3 screws! 😯 If we can eliminate these issues by "spring removal," it would absolutely be worth doing. I'm just unsure how do it in a way that won't damage the hinges. 😰

I decided to cut a little triangular-shaped piece from my transparent Polycarbonate resin board to solvent weld over one spot that was cracked originally. It didn't crack all the way through there and was the only location where the hinge holder was still holding on. This weld covers more...