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Sinclair QL Microdrives and Microdrive Repair (Part 3)

Support Noel's Retro Lab on Patreon:   / noelsretrolab   Let's have an in-depth look at microdrives, the storage technology of the Sinclair QL (and to a lesser extend the ZX Spectrum as well). It turns out one of the microdrives wasn't working, so I did some fault-finding and ended up replacing the microdrive ULA itself (which apparently it's not an uncommon problem) to repair the microdrive. Later I looked into re-felting a cartridge to make it functional again, and finally, I ran some speed tests vs floppy disks and even traditional audio tapes. Chapters: 00:00 Intro 00:32 What is a microdrive? 04:07 Testing the microdrives 04:55 Microdrive fault finding 07:01 ULA diagnostics 16:43 ULA replacement 20:19 Re-felting cartridges 23:25 Microdrive performance 28:45 Conclusion More QL videos from #QLvember:    • #QLvember - Sinclair QL in November 2020   More awesome music by McKlain: https://www.mcklain.com You can also support Noel's Retro Lab on YouTube by joining this channel:    / @noelsretrolab   Connect with Noel's Retro Lab: Discord ➤   / discord   Facebook ➤   / noelsretrolab   Twitter ➤   / noelsretrolab   Instagram ➤   / noelsretrolab   #SinclairQL #RetroComputer #QLvember