so what happened to cause CIA's to lose the magic smoke?
Both of my A1Ks needed to go to the shop. One was due to the motherboard (REALLY long story - I'll fill you guys in when it comes back to me in the next 1-2 weeks but the TL;DR is it died rather dramatically). The other was to recap it's power supply, because both PSUs were potentially shaky and one seems to have contributed to the demise of a machine.
The 3000's internal PSU is an achilles heel, just like the battery areas around so many big-box Amigas all these decades later. And unfortunately there aren't any off-the-shelf replacements one can simply go buy or even any 3rd party folks out there selling after-market inventions. The market for the A3K is just too small, apparently. You have to pretty much custom-build your own. And you need to know what you're doing if you want it to work well and actually fit properly.
So I'm getting both of mine re-capped and load-tested before putting them back in.