The MDD is still connected to my KVM along with my SGI Fuel, Quad G5 and the Raptor Talos II I'm typing on which is my current daily driver. The MDD was my daily driver for about three years, dual-booting Jaguar and Mac OS 9.2.2. Even after the Quad G5 replaced it as my primary machine, I upgraded it to 2GB of RAM (though Mac OS 9.2.2, now its sole operating system, only supports 1.5GB), a 256MB Radeon 9000 Pro and a Sonnet Encore/MDX processor card with dual 1.8GHz 7447A G4 CPUs. It also got a second SuperDrive and a second hard disk, a G4Port serial adaptor to replace the modem which I rarely used and a Formac ProTV tuner/digitizer, and it still has two slots and two more drive bays free. It's not survived perfectly -- the audio jacks got mangled in an accident, so I have to use a USB adaptor for audio in and a set of Pro Speakers -- but the important stuff still works dandy. Classilla is built on this machine, along with my work on Power MachTen and of course all those great late 1990s Mac game ports (though No One Lives Forever, which I bought with it, requires 10.1.4 so I play it on the G5 in Tiger).
On Sunday I was making progress on getting the classic Mac OS to speak TLS 1.3 with a little help (more about this soon). I pressed the power button to transfer my work over and test it and ... nothin'.
MDDs are great machines, but they're notorious for two particular failings: they can howl like anything (nicknamed the "Windtunnel G4") when they heat up, and their power supplies suck. The power supply was undoubtedly what failed, so that means ... a Refurb Weekend!
At this point we paused for a few minutes to blow out all the dust.It is possible to rewire an ATX supply to provide the voltages sans the ADC's 25V line, but an ATX supply won't fit on the shelf inside the case to hold the PSU. We'll consider potential mounting options for the next time this thing chews through one.)