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I removed the caps again (with my new hot tweezers) and looked closer, and there are definitely some questionable/corroded traces near some of the caps: So...rookie mistake :rolleyes:. Sorry for the noise. Looks like I get to learn how to repair traces. Is this the ideal/correct method...

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Yes, like I said, I already did some continuity checks on the SIMM slots themselves, so I have a multimeter. It's hard for me to follow traces on a multi-layer board like this to find the termination points to check continuity...and there are just a bunch of them too. Limiting it to traces...

No, I got that initial error after recapping. I never attempted to use this board with the old capacitors since I could see some signs of leakage under a couple of them. So I don't know if the fault existed before I messed with it. I'm pretty confident the board was completely dry each time...

I've reflowed/added-solder to all of the new caps multiple times since that first picture was taken. I suppose I could remove the caps again, clean the pads again, and install new caps. I do find this packaging a little easier to solder. My process for initially soldering the current caps...

I played around with the jumpers. If JP2 isn't closed, I get garbage to the screen, regardless of what other jumpers are closed. This jives with other revisions of this board I've seen that didn't have jumpers and just had JP2 hard-wired...like this one: If JP2 is closed and any other...

I don't see any solder joints that look suspicious, but like you said, they're tiny. I wanted to try to figure out which two SIMM slots it's complaining about, so I booted up the accelerator with no SIMMs installed and got this: After some experimentation, I came up with this mapping: D31 -...

Here's the steps I took with the MultiSpeed accelerator in the SE today: First, I moved all four SIMMs on the accelerator to different slots. My thinking was that if one of the SIMMs was bad, I would get a different range in the error message than "D7 - D0". The error message remained the...

It's the DOCI50-FPU, so the MicroMac site says it's for the IIci. Now if I can just get this MultiSpeed accelerator in the SE working...

Went looking through this large haul of stuff I got from my dad to see if the box for that accelerator was in there. Got excited when I saw a MicroMac box, but "unfortunately" it was a different accelerator...unused and still sealed in the antistatic bag :p There is a IIci in this lot it...

No luck...the only text files in those archives are release notes...no hardware documentation.

There are four identical SIMMs installed, two on the front, and two on the back. Identifying the chips on the SIMMS, each SIMM looks to be 1MB.

Ya, I saw that, but unfortunately none of their product manuals are hosted there :( That was my plan, but I didn't know if those jumpers had to be configured a certain way for running fewer than four SIMMs (similar to the RAM jumper on the SE's main logic board), and I'd hate to still get an...

I did recap it. Those are the new caps. I cleaned off all of the dried up electrolyte that I could. The solder pads were clean and shiny before installing the new caps, but I didn't want to get as "aggressive" with cleaning the traces. That whole board has been cleaned with 99.9% anhydrous...

I just finished cleaning, recapping, and reassembling an SE. It had a MicroMac MultiSpeed accelerator in it when I got it. The machine boots to the '?' disk without the accelerator installed. With the accelerator installed, I get this: So I'm guessing one of the SIMMs is bad (I think there...

So I found this external video adapter in a Mac Classic I got awhile back (sorry for linking to another forum...easier than reposting): https://forum.vcfed.org/index.php?threads/weird-external-video-adapter-in-my-mac-classic-what-display-is-this-for.1238636/#post-1257350 Anyone seen one like...