Uploaded November 2025 | Updated September 2026, 1 week ago
The Macintosh IIsi was launched as a lower-cost alternative in the Macintosh II series. To keep costs down, Apple used more electrolytic capacitors, and the surface-mount electrolytic capacitors from the early 90s are past their expected lifetime. In addition, despite the power supply being made by Sony, the capacitors in it are also known to leak (though I can't help think "cost tweaking" by Apple led Sony to use lower grade capacitors).
I want to finish the IIsigh (my 25MHz Macintosh IIsi) by giving the floppy drive a tune-up. This is the logical conclusion to the work I did during Dave's stream on Sunday. youtube.com/live/eRuJ2lDGukI?si=6XD7GxHpp-J8kUw6
Will I successfully tune-up one of the IIsi floppy drives? Will I find a good floppy disk in my box? Will I find my hot glue gun so I can tack the two bodge wires? You'll have to watch to find out!
*
Table of Contents
0:00:00 Pre-Roll
0:02:38 Greetings and Announcements
0:05:33 Working on a Floppy Drive for IIsi Number 4: Teardown, Clean, Lube, and Rebuild
1:11:24 Reviewing What I've Done to IIsi Number 4
1:17:39 A "Brand New" Disk with something on the disk surface...
1:18:48 Format Test with a Different Floppy Disk
1:24:10 Trying to Format That Floppy Again (ASMR Attempt)
1:28:21 Let's Try a Pink Disk
1:29:55 That Disk Failed to Format... So I Remove a Speck of Something and Try Again
1:34:48 How Not to Buy Floppy Disks on eBay (the place where I buy the things I later regret™)
1:35:10 Trying to Format Yet Another Floppy Disk
1:36:20 Pausing to Re-Clean the Heads
1:41:42 Proceeding to Try to Format the Remainder of the Floppy Disks
2:25:43 Re-Clean the Heads, Count the Bad Disk, and Put the Floppy Drive Back Together
2:32:33 Closing Thoughts
2:37:42 Outro
2:39:18 I Found It
*
Ways to Support the Channel:
☕️ Tips or Support via Ko-fi: ko-fi.com/jdmcs
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... or simply do the YouTube things: Like/Dislike, Comment, Subscribe, Enable Notifications, and participate in the Chat. These things help the channel, too!
**
Read Computerized Start™, my Official Blog: jdmcs.net/myblog
Follow me on Instagram: jdmcs.net/myinstagram
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The Macintosh IIsi was launched as a lower-cost alternative in the Macintosh II series. To keep costs down, Apple used more electrolytic capacitors, and the surface-mount electrolytic capacitors from the early 90s are past their expected lifetime. In addition, despite the power supply being made by Sony, the capacitors in it are also known to leak (though I can't help think "cost tweaking" by Apple led Sony to use lower grade capacitors).
I want to finish the IIsigh (my 25MHz Macintosh IIsi) by giving the floppy drive a tune-up. This is the logical conclusion to the work I did during Dave's stream on Sunday. youtube.com/live/eRuJ2lDGukI?si=6XD7GxHpp-J8kUw6
Will I successfully tune-up one of the IIsi floppy drives? Will I find a good floppy disk in my box? Will I find my hot glue gun so I can tack the two bodge wires? You'll have to watch to find out!
*
Table of Contents
0:00:00 Pre-Roll
0:02:38 Greetings and Announcements
0:05:33 Working on a Floppy Drive for IIsi Number 4: Teardown, Clean, Lube, and Rebuild
1:11:24 Reviewing What I've Done to IIsi Number 4
1:17:39 A "Brand New" Disk with something on the disk surface...
1:18:48 Format Test with a Different Floppy Disk
1:24:10 Trying to Format That Floppy Again (ASMR Attempt)
1:28:21 Let's Try a Pink Disk
1:29:55 That Disk Failed to Format... So I Remove a Speck of Something and Try Again
1:34:48 How Not to Buy Floppy Disks on eBay (the place where I buy the things I later regret™)
1:35:10 Trying to Format Yet Another Floppy Disk
1:36:20 Pausing to Re-Clean the Heads
1:41:42 Proceeding to Try to Format the Remainder of the Floppy Disks
2:25:43 Re-Clean the Heads, Count the Bad Disk, and Put the Floppy Drive Back Together
2:32:33 Closing Thoughts
2:37:42 Outro
2:39:18 I Found It
*
Ways to Support the Channel:
☕️ Tips or Support via Ko-fi: ko-fi.com/jdmcs
🈷️ Support me on Patreon: patreon.com/jdmcs
📦 Amazon Wishlist: jdmcs.net/wishlist
... or simply do the YouTube things: Like/Dislike, Comment, Subscribe, Enable Notifications, and participate in the Chat. These things help the channel, too!
**
Read Computerized Start™, my Official Blog: jdmcs.net/myblog
Follow me on Instagram: jdmcs.net/myinstagram
Follow me on Twitter: jdmcs.net/mytwitter
![Lets Go [Pentium] Pro: If At Second You Do Succeed, Try Another Regret! (Computerized Start™ Live)](https://i.ytimg.com/vi/g4_dgVcUYUs/mqdefault.jpg "Lets Go [Pentium] Pro: If At Second You Do Succeed, Try Another Regret! (Computerized Start™ Live)
This description will be updated when I have a few minutes...
*
Ways to Support the Channel:
☕️ Tips or Support via Ko-fi: https://ko-fi.com/jdmcs
🈷️ Support me on Patreon: https://www.patreon.com/jdmcs
📦 Amazon Wishlist: https://jdmcs.net/wishlist
... or simply do the YouTube things: Like/Dislike, Comment, Subscribe, Enable Notifications, and participate in the Chat. These things help the channel, too!
**
Read Computerized Start™, my Official Blog: https://jdmcs.net/myblog
Follow me on Instagram: https://jdmcs.net/myinstagram
Follow me on Twitter: https://jdmcs.net/mytwitter")
