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Wow thank you for posting this, I have been looking for this info for years. Back in the early 90s I was at a Boeing Surplus auction and saw a whole pallet of these machines, yet no one on the forums had ever heard of them. I was starting to question my sanity. If anyone knows of one of these...

Great thanks, I spent longer than I'd like to admit looking for a component labeled U1F. 😅

Thanks Kai, I'll reflow the P1 connector pins and look at U3 when I get a chance, hopefully this weekend. I'm not clear on the part about checking U1F, U2F, and U2G. My technical knowledge of these machines is somewhat surface-level. I didn't see parts U1F, U2F, or U2G on the Plus AB, but...

I tried a known-good analog board with the same results - no change. I also don't know when/if this AB has ever been recapped, but the fact the behavior was the same makes me think it's not the AB. I was able to confirm the buzzing is coming from the speaker and not the caps.

I hadn't thought about the AB, if it has been recapped it was 25+ years ago. I have a couple other working machines I can swap boards with.

I haven't taken a really close look at the board with a magnifier or microscope yet, I did take a quick look and didn't see anything damaged, but I can look closer tomorrow. The two garbage screens are from different attempts to power up. Neither is related to any specific set of conditions. I...

I have a Plus with a Total Systems '030 accelerator that's giving me some problems, I'm hoping someone here might be able to help. I've had the board for years, it sat for a very long time without being used, and a couple years ago when I tried to remove it from the machine, the plastic Killy...

Ah ok, thanks for the info. For a moment I thought maybe I could swap the SWIM chip from one of my junk SE/30 boards, but Google quickly dashed those hopes. 🙄

Somewhat related question... Do you know what is required to switch a SE to support a 1.44 floppy? Obviously you need the 1.44 drive, can you just swap in the FDHD ROMs, or is there more to it?

Very cool, I had no idea you could (barely) fit an internal HD along with the dual floppies! I wonder if that was a commercial product, or something someone built themselves. Does the bracket have any markings?

Thanks for doing the digging on that. @JDW did a video series a while back about his 512k with a HyperDrive 10mb internal drive. It's a great series of videos, and he talks about the history of the company in the 3rd video. I browsed through some old MacWorld issues last night as well and...

I picked up an SE a while back with a non-functioning internal HD. Long story short, today I realized the drive is an aftermarket upgrade from GCC. The machine was originally a dual 800k floppy machine, and this kit came with the drive, a badge for the front, and a strip that covered the upper...

I was working on the keyboard today to clean a couple sticky keys, so I decided to look at the ADB connector while I was in there. All the solder joints looked fine, but I went ahead and re-flowed them and added new solder. I blew out the port with canned air, then DeoxIT, then canned air...

Awesome work, it's great that you took a machine with sentimental value and decided to do the hard work instead of just trashing it!

I ran across this video yesterday, a guy has a SCSI MiniScribe 8425 that also had a resistor and capacitor next to each other burn. I'm not sure if there is any relation between the SCSI and IDE boards, but I thought it was interesting.

Great, thanks for all the help @retr01 and @AmigaOfRochester ! 😀

Thanks for the info. I'll replace that leaking cap at C7. Do you think it's worth repairing the corroded traces, or leave it alone along as it's working? I'll check the AB for cracked joints, maybe reflow them out of caution.

Yes, it works fine, except for the temporary issue I had yesterday where I had the no-chime and simasimac screen. Do you have any thoughts on whether it's worth repairing, or just run it while I search for another board?

Yes, always using 99% IPA. Thanks for the help and the referral! I've looked at the Rominator from BMOW, and just recently learned about GW's ROM SIMM. Never heard of GGLABS. That's something I wouldn't mind doing down the road once I have the rest of the system dialed in.

I took some photos with my microscope, it's not great quality but it does better than a phone camera. 001 - 004 are the area around C7. 001 & 002 are zoomed out, and 003 & 004 are the same area but zoomed in. 005 & 006 are taken at an angle to try to see the trace under the edge of C7. 007...