Root42 tackles an ambitious repair with an SFD 1001 floppy drive, offering a step-by-step look at the process and challenges along the way. The key focus is SFD 1001 repair, a topic that captures both technical depth and vintage hardware enthusiasm. Unlike the standard Commodore 1541, the SFD 1001 is double-sided and stores up to 1 megabyte per disk, using a unique 100 tracks-per-inch mechanism. Its GPIP connector and compatibility with PET and other classic systems make it both rare and valuable.
Diagnosis and Teardown
The SFD 1001 arrives in pristine condition but refuses to spin its drive motor, even with power. Suspecting issues with the 12-volt rail, Root42 carefully opens the unit, inspects the internal boards, and reviews schematics. He details the differences between the SFD 1001 and similar drives like the 8050 and 8250, noting key chips and the unusual double-CPU layout. His patient approach includes voltage checks and scope readings, revealing healthy 5-volt and 12-volt lines after careful testing under load.
Repair and Restoration
The heart of the SFD 1001 repair centers on a leaking and corroded motor control board. Root42 documents every step: removing damaged capacitors, cleaning corrosion, and reinforcing damaged traces with wire. His soldering skills are on full display as he restores broken connections, replaces all suspect caps, and uses modern SMD parts to fit tight spaces. With the board cleaned and protected with UV lacquer, the reassembly process begins. He stresses the importance of careful reassembly and testing at each step.
Testing and Final Results
After reconnecting all cables and securing the mechanisms, Root42 fires up the SFD 1001. Initial attempts show promise, but he discovers a forgotten power connector—quickly fixed with another round of disassembly. The repaired drive spins up, formats disks, and copies Infocom games without errors. Compatibility tests show the SFD 1001 reading both its own disks and those from an 8050. The video demonstrates smooth operation on a PET 3032, with plenty of storage for classic text adventures.
Watch the Full Repair
Anyone interested in vintage hardware, detailed electronics work, or the unique SFD 1001 will find this repair fascinating. Root42’s clear commentary and hands-on demonstrations make this SFD 1001 repair a must-watch for retro enthusiasts and Commodore fans alike. Watch the video to see the full process and discover why this drive remains a hidden gem in classic computing.
