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you can fix the corrosion by using white vinegar

In the long run, yeah. I have an LC III that I shoved a SCSI2SD in because it came with no hard drive. One of these days, I might pull it out and put together a BlueSCSI V2 with a Pico W so I can get WiFi with my LC III, and maybe keep that PDS slot open for if I find that Sonnet Presto...

I'd personally recommend shoving a PiSCSI or BlueSCSI V2 in there. You may not get the sound, but you'll get a lot of features, such as emulating a CD-ROM drive or a SCSI ethernet adapter

oh wow, my 637CD, 6214CD, and 6300CD all have their original caps (to my knowledge with the 6214 and 6300)

however, you can put an X2 where an X would go, and it's a similar story with Y caps

hold on, won't 8.1 boot on HFS+, or am I thinking of 8.5-9.2.2?

I wonder if this can be made possible on a G4 iMac. I have an 800MHz iMac that I want to try this on

welp, now to send this to 65scribe as a correction in his video on the ANS where he says that nobody was successful in making the ANS boot Mac OS

Yeah I'd just replace the analog board at this point

Odds are. With the Mac powered off and unplugged, measure that potentiometer with a multimeter, it should show some high resistance

iirc there's a potentiometer/variable resistor on the board that you can turn up with a screwdriver (be careful, high voltages nearby). Just turn that and probe the voltages while you do so until you hear the beep

Capacitors, have you replaced those?

But the graphics card is probably also going considering it's repeating across the screen

So I wonder if something similar could be done with Mac ROMs

Yeah your graphics card in your MDD is probably dying. Some graphics cards die in such a way where a monitor still recognizes the signal as valid, but it doesn't look right to you and me. I'd try swapping it out if you can

620/630 roms probably also have FPU presence detection as well, as TattleTech apparently thinks the computer is a Quadra if a non-LC 040 is used

In your face, miggy nerds! Would be cool to see something like this be available for all non-PowerBook 68040 Macs, though I think that is a rather lofty goal

https://www.thingiverse.com/thing:7059373

Yes. When I recapped my LC III's logic board, I recapped it with Vishay Sprague capacitors, a really reputable brand, and they're still holding up today

yes, the iconic 7 ball