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^It should work. Not sure which chips you'd need, though. If the ROM SIMM socket is installed, you could get away with one of @dougg3's SIMMs, programmed with the ROM dump files you found.

Looks like Eric has a M3501 (the AEK II), just doesn't have it pictured. Instead, his M0115 is shown.

No problem. @Paolo B was the person who clued me in on it... In this post: https://tinkerdifferent.com/threads/superdrive-floppy-maintenance.549/post-5174

Nice setup. I haven't gone there yet. For a while, had a Mac/Apple II closet, back when I had the 2012 conquest, but am now down to a closet shelf where my C650 is currently residing, while it waits for a replacement eject motor for its floppy drive, and the Mac table, which is where my...

That does sound like the ZTS isn't lined up correctly. I would crack the case open again, take the drive out of its bracket, then place it on something that's not metal, so it doesn't provide a dead short when the power switch is on. While the computer is powered up, loosen the screw for the...

Yes, you may have to. All three of my Macs needed to have the adjustment taken care of, even though the sensor was never moved by someone prior to my servicing the drives. The eject problem, might be a board issue - I do have one drive in an A9M0106 external case that will not operate an...

This may also be somewhat pertinent after the drive is assembled again. https://tinkerdifferent.com/threads/superdrive-floppy-maintenance.549/ Might need to adjust the zero track sensor as well, as described in the above thread.

Nice. At least now you know what needs to be done to use the later 590-0167 cable with a black label 800K or a 400K drive.

Not a problem. ;) (y)

If the nubus slots are dead on any of the boards you're working on, follow @pfuentes69's advice and replace the 74ALS240 chip below C16 with a new one. Here's his thread: https://tinkerdifferent.com/threads/problem-with-iici-and-nubus-cards-solved.317/ -J

Yep. the 650 boards have both. Same with the speaker headers. I'll have to look at my 650 when I reinstall the hard drive into it and see for sure, but I think the ROM simm slot on it is empty, so it's running on the onboard ROM chips.

Most 650/800 boards I've come across have had the heatsink that clips onto the socket. I once received a base model Quadra 650 board (4MB RAM, no ethernet, and a 33MHz 68LC040) that had the other style heatsink that clips onto the chip itself. @lobust If you want your Q800 to think it's a...

Cool. Glad it's working. Battery-wise, I'd be tempted to wire up a triple AAA holder and mount it somewhere away from the board. That way, you can use more common batteries to get the 4.5 volts necessary and not have to worry about the stock 4.5 volt alkaline battery deciding to let its acid...

Grab one of those USB to IDE external hard drive cases, then hook it up to the iMac that way. Then, try using Drive Setup on the G4 under Mac OS 9. If it works, then you can swap it in and save the BlueSCSI for another machine. Otherwise, use an IDE internal Zip drive on the IDE/ATA bus, then...

@Alf Torp Nice grab. @Certificate of Excellence My second modern Mac was a Mac Pro 3,1 that a friend of mine found on the sidewalk near his house in late 2014, then gave to me, since he didn't plan to use it. Perfect timing, since that was when the keyboard on my A1181 Macbook died. Used it...

Hmmm, jumpers are set correctly? I do know that Apple's early implementation of IDE wasn't that great. Basically had a requirement of 8GB being the boot partition. Do you have access to a revision 2 B&W G3 or a G4 PowerMac that can boot Mac OS 9? If so, format the drive using that and...

It's probably fine electronically. Just looks like it went to war. It might be worth checking with Herb at Retrotechnology.com and see if he has the replacement plastics. Show him the pics of the damage, that way, he'll be able to find the pieces you need from his stash of parts. He has some...

The 250GB drive will work, you may need to partition it in Drive Setup to get the Mac to recognize it. Minimum OS requirement is System 7.5.5. With the 250GB drive, you'd need to set up a 2GB or smaller partition to run System 7.5.5 or 7.6.x on it. You can run Mac OS 9.1 without needing the...

Might be best to keep your eyes peeled for another case. With respect to the retaining clip, you might be able to rebend it and get it attached to the ZIF socket again. If not, leave the computer on its side, so the board is at the bottom, then try to boot it that way. Use the correct version...

Here's the one I use. https://www.ebay.com/itm/304188810504 Fits a normal bit driver. -J