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You're going to have to open the system and remove the floppy drive and do the cleaning & lube procedures outlined above. There's also good chance that one of the tiny gears in the drive may need to be replaced.

Howdy! Have you tested the floppy drive from the Classic in your LCIII to confirm that the drive itself is not the problem?

Probably not your problem, but there are versions of 10.4.x that are Intel-only and PPC only, just a thought.

You should determine exactly what model you have to understand exactly what OS it will run. (Early models needs minimum 10.3.5 and the later model needs 10.4.2. They should all run 10.5.x) There are several websites that will decode the serial number and tell you the model.

I would recap the system. It may be other failing components that are frying the flyback.

Then I would assume it has something to with how the disc is being burned on the PC. But that's just a guess.

If it's the later model it may require 10.4.2 to boot.

Replace the PRAM battery. If the PRAM battery is missing or dead it will behave that way. (This will also affect sleep/wake as well.) The regular battery probably has just enough juice to keep the PRAM from resetting.

The FW ports were in a separate module that connected to the board.

The glue probably cyanoacrylate (super glue) or something similar. It, along with the plastic is pretty brittle. Here's a vid that shows one method.

It's glued together. You'll have to use a thin, sharp knife to carefully pry along the seam, break the glue, and separate the case.

Mac cases are not made of nylon. Also I remember hearing/reading somewhere way back when that part of the reason the old Macs are so brittle is because of the flame retardant chemicals that were added to the plastics back then.

Neat, thx for posting. Lol! That's brilliant!

Nice video! :)

Mine has 0-7 setting.

Have you tried removing the AE board and booting the system?

Since I (apparently) see that solder bridge on both chips I would assume it's supposed to be there.

I don't have bench marks any more but when I went from 256 to a 1 meg cache in my 8500 the difference was huge. I forget what I paid for the cache, $100+? but it was worth it at the time. When I revived my 8500 a few months ago I couldn't get it to boot from the XLR8 carrier card (with a G4)...

Yikes, that's unfortunate. Yeah those Trinitron monitors had a great picture.

The Quadra 650 was the solid workhorse of the 040 Macs.