This was a fun repair! Still riding the high from yesterday.

Let’s take a trip.. 💋 The Journey🚝 by Sophie Rose on #SoundCloud
on.soundcloud.com/i0LLq8VukUeS...

This Macintosh SE/30 board looked pretty clean after the ultrasonic bath. But after recapping, it gave me a simasimac. This long short shows my battle against corrosion and other nonsense with help from Rudy's Retro Intel's SE/30 Peeker board: youtube.com/shorts/7bX-M...

RFK Jr on Tylenol and autism: "It is not proof. We're doing the studies to make the proof."

It's time! After 33 years, I'm adding Gravis UltraSound support to my DOS game engine. 😄

I never owned a GUS back in the day, so it never happened. Now I've got a PicoGUS from @polpo.org (and a great emulator from @86box.net). So off we go!

Step 1A: I mirrored the final GUS SDK (v2.22) on GitHub.

Before and after of a Mac floppy drive repair. Superglue and about 10 traces.

Still think Antifa isn't violent? Here's bodycam footage of Antifa founder B.J. Blazkowicz shooting a heroic member of ICE who was just trying to protect this great nation. Thank God we have Blazkowicz's girlfriend in custody.

Hey folks. I will be streaming today starting at 2pm eastern. I have a bin of motherboards from Socket 7 to Intel Core 2 ones that all need testing. Come join and watch to see what works and what might catch fire.

youtube.com/live/180aeDb...

I hadn’t thought of actually refurbishing those. I bought new ones recently.

Going to try to sneak in a quick, super easy, super chill stream this afternoon (2:30 eastern) to recap Mac Classic and SE/30 logic boards. This is guaranteed to go totally smoothly.
youtube.com/live/0FuNC1h...

YES

www.portlandmercury.com/news/2025/10...

It would make sense that we’re all working on IIsi power supplies during spooky season

Remember this? 👇

there are pros and cons to our way of government in the US specifically they fired all the pros and the cons are in charge now

Well, the IIsi PSU is fixed-ish. My good potentiometer on the daughter board broke when desoldering, so I just replaced it with a 1.5kohm resistor (very professional!). IIsi very happy with a 50MHz Daystar accelerator. Now I need to fix its Video Spigot.

LOL THEY’VE USED HIM BEFORE

Clip of my IIsi PSU exploding from yesterday’s stream: youtube.com/clip/Ugkx_Xw...

Want a clip of mine frying? 🤣 youtube.com/clip/Ugkx_Xw...

The bad news: I don't get to share video footage of my IIsi PSU frying. The good news: it's fixed! Even though I wasn't feeling optimistic after the first Q101 and D104 replacement failed, I tried again and it worked. The difference: this time, I didn't try to power it up with the dim bulb tester.

I was measuring the M51977FPs removed from the PCBs. I was checking to see if there was any evidence of it being damaged

D104 was indeed short on the exploded psu. The variable resistor on my daughter board was bad, measuring ~27k no matter how far I turned it. I checked two others and they were 1300 and 1800ohms. I'm documenting some resistance to ground values across different parts docs.google.com/spreadsheets...

Hey folks. I am going to be streaming starting at 9am eastern this morning. Going to finish showing off the items from the haul. Come see if I can make Ian drop even more f bombs in the chat.

youtube.com/live/-gdlCDG...

It was definitely the same K1402A. I haven’t done any more post mortem (that one was an easy find 😅). I transferred the (original, recapped) daughter board to another PSU and it went into protection, but no boom.

Today’s stream is a great watch if you’re into schadenfreude (not pictured: IIsi power supply explosion)