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Wow, that’s a nice rig! Can’t go wrong with a good old IBM XT and a Mac 512. Two classics. I also give you extra points for having a Microsoft green-eyed mouse. :)  I’m also quite jealous of that IBM 5154 monitor!

It looks to me like those caps have already been replaced and that is flux. :)  

Got the Sony Test betas running on the 512!   The “Steve sez...” dialog boxes in version 7 are just beyond cool!

Wow, that’s awesome! Didn’t know that.   I’ve got one of those drives, so I will be doing some experimenting tonight...

Happy to report the floppy drive is still working! Also, I received the other analog board I purchased with the older, smaller flyback and it is working great! No more high-pitched ringing either!   I can’t believe it just worked. Didn’t need any help at all. Obviously, it still needs to be...

No, it having the original caps only hurts it. For the hard drive, yes, it would be cooler (to me at least) with the original hard drive if you could get that working. But, if you are going to be writing in it, a solid-state solution may be a good idea so you don’t loose data to a hard drive...

Yes, you should never just stick a regular cleaning disk in a single-sided drive. However, like I said, you could, with the drive out of the machine, put the cleaning disk in and hold the pressure pad assembly off of the disk with your finger. I don’t think it would hurt anything that way.

You’re welcome!

Here’s a better pic of what I’m talking about (not my own pic). It’s the screw outlined in green.

There is a screw behind that piece of linkage I outlined (going through the little circuit board the sensor is mounted to. Loosen that, and the sensor will move back-and-forth allowing for adjustment.

DAMN, the internal drive has given me absolute hell in this Mac today. It started giving me the sad Mac and spitting the disk out.    So I completely tore the drive down, took the heads out and stuff: Got all that old grease off of the worm gear. Didn’t help one bit. I spent about 6-hours...

The ringing has returned unfortunately. Damn.

Well, I unsoldered the flyback to inspect it, and also because I was thinking about temporarily swapping the one from my platinum Plus into here so I could stand to use it (the high-pitch ringing was very intense). I decided to solder it back in first just to see if anything changed, and it has...

I’m really doubting the drives are dead. Obviously there is a LOT of something built up on the disk, even if you can’t see it. Cleaning diskettes are a lot more abrasive than a cotton swab, so it would be nice if you had a single-side cleaning disk.    One thing you could probably try is...

Here’s a pic of the current set-up. I’m using my platinum Mac Plus keyboard and mouse for now. Next items to find are an original keyboard and mouse.

Thank you! Yes, it’s in very good condition indeed. :)  Good luck with you 128K restoration! Thanks! Yeah, the untested 400K drives seem to go cheap. All they usually ever need is a little lubrication. And yeah these drives are huge! Very easy to service too. Love the way they are built. Great...

Got System 0.85 running on it!

The sensor that is discussed here: https://lowendmac.com/2001/vintage-mac-400k-floppy-drive-repeating-click-of-death/