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Yeah, that's what I was told once by SiliconInsider when I inquired about it. So for now, the method of swapping chips from donor modules seems to be the most feasible option at the moment.

What should we know about the SMD caps if attempting this mod?

Congratulations on this great feat! Great to know that it's feasible and working.

Yes indeed. It's something I've considered.

Good luck with that... I'm lucky that mine has I believe it's 24MB; would love a 32MB card but people charge crazy money for them, and unfortunately the connectors used are unobtainium according to SiliconInsider, so he (nor anyone) is able to make new cards like with the PB100s.

I remember opening mine up to recap as well and, at least in mine, the hook seemed deliberate. As for the recapping not fixing, that unfortunately was my experience as well, even putting new caps on the vertical daughter board. I ended up just getting another one on ebay (for a reasonable...

PB500 is a great little internet machine. Enjoy!

Gotta just turn up the temp on your iron, it's definitely possible to get it off. You shouldn't be scorching the board, the heat is going into the plate (plus there's the plastic separator). If you have it, use a beveled edge tip, and add some flux. The pin is a hook, so that will be a little...

Looks exciting!

Also, here is a marketing sheet from a recent ebay listing from user "1980santiquity". Probably not that informative, but I thought it was interesting:

¥4,500 is a very reasonable asking price, I hope you are able to purchase it! Though shipping from Japan may push that up a bit...

Macintosh Repair & Upgrade Secrets has a section on installing a fan non-destructively. I would start there.

Thank you for the info, @saybur. The design was definitely simplified by Focus at some point! I will stick with the 9VAC and see how it works. If it doesn't, I could always try sourcing a new power adapter with a higher amperage rating than my current one, to see if the EtherLan needs more current.

Here it is, just for the record:

Thank you for your detailed response, @Chopsticks. Although I am decent with a soldering iron, my knowledge of just how these circuits function is low. I do know though that too high a voltage can easily fry delicate components. I suspected that the 4.5VAC that I was sending was indeed probably...

I did a quick test with a selectable-voltage power adapter. I set it to center-positive and 4.5 volts (supports up to 0.6 amps). The front panel LEDs lit up, but I'm of course wary of increasing the voltage any higher without confirmation...

Evidently not! So unless it fell off at some point, I didn't (consciously) change any jumpers on the drive itself. Would presumably have to find the manual for the FD-55BR-500 to verify the function of the jumpers.

A photo of the interior of my SC-T, showing the wiring is the same as Snuci's:

So strange that it doesn't show the power details on the back of the box... The manual can be found here if people are still looking for it (uploaded by someone in 2016) https://archive.org/details/EtherlanSC/mode/2up

Did we ever confirm the details of the PSU for sure? I just received one myself and it is missing its brick as well.