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I'm glad you checked back in and that its not all been downhill. If you follow closely enough, you'll notice that there are more than a few of us that have seen tough times and eventually come out the other side. Its taken me years to get around to some of my projects (for some items the...

Good catch! 🥶 I'm really interested in the answer though...

I've found APS Power Tools to be really good for this over the years. It would mount items that would not mount to the desktop on their own for a variety of reasons e.g. I had a secondary IBM drive that I just could not get the timing right for its startup notification and used it for that one...

Ok, so I have never personally used one of this version, but I thought about getting one to experiment with by putting it in an external case (since it has a configurable SCSI ID available ) On the web page for this, which you might want to check out, it states... (bold emphasis is mine)...

Glad you got it working! One of the brilliant, but maybe overlooked items in that picture is how you placed your board on the bottom of your inverted case as an ersatz bench. Elevated, non-conductive, no worrying about putting the board in correctly each time - nice! Great work with the PSU also!

I use a drop of liquid electrical tape. Like zigzagjoe mentioned, there is enough resistance and the drop just marks it, like obsolete said.

Your favorite search engine should be able to provide results - search for this: Mac 550 Service Source One of the first couple of links shown for me was https://www.macdat.net/files/pdf/apple/servicesource/macintosh_lc_520-550-575.pdf

They definitely are! I've had an eBay search for both, for a while now, but haven't seen one come up yet. (it does get me weekly false positives though)

Cool! The gameplay looks awesome in greyscale!...still kicking myself for not getting a clear case when they were out.

Also, the T2 (transformer) terminals can look brown and be ok, but on the photo here they appear nearly black. Look closely for signs that the windings or attachments could be burned or separated.

"For use with : Apple Macintosh and Lisa." - because no other computer would use 120 volts in the states. ;) Nice job on the board, maybe cover it with UV-curable solder mask, if that's ok for a surge suppressor.

I think its great that we now have the option to do so, if we wish - I have over half a dozen Macs with replacement drives and at least five more 'on deck' to be completed as time permits. But I also have plenty more that keep on chugging away with spinning disks, since some are more durable...

...and yes I bought this in spite of the cost. Back four years ago when I bought these, other SCSI solutions were more expensive than they are now and definitely harder to work with, so in the scheme of things it seemed like a better deal than it would be now. A part of me also wanted to test...

It sounds like you have taken care of everything you can and I was actually hoping for you to have a different PSU, since there is a recap kit for the ASTEC one, which makes sourcing the caps a lot easier. Having a list is one thing, but trying to look them all up, get the right diameters and...

It will need to get re-capped soon. (sorry, but you already noticed the cruddy connections - they are evident in the pictures near the caps) The floppy issues could be that it needs cleaning if you have not cleaned/re-lubed it yet. My II/IIx/IIfx floppy drives all needed this type attention...

Since I have just completed re-recapping my IIx, and I (finally) have it running and starting normally, I have a couple thoughts, but first, I'd like a bit more information - which PSU do you have (Sony or Astec)? Also, it looks like they did not replace the axial caps (they need to be replaced...

Congratulations! Its a Macintosh! I'm guessing most of these need some TLC to keep them running at this point, and you are definitely doing a great job with this one. You handled the memory replacement well, which gave me courage to tackle a fix I was hesitant to try. I just have to add that...

Great, simple, fix. Glad its working again!