Let's take an in-depth look at how to clean and fix a Sony/Apple MFD-51W-03 800k 3.5" double sided floppy drive. (Also applies to MFD-51W-10 and MFD-75W-01G 1.44mb high density drive which work basically the same way.)
This is a long and in-depth video showing you exactly the method I use to bring these drives back to life.
This drive was extremely gummed up from age so needed to be disassembled and cleaned. Then, the eject mechanism was not working correctly so I troubleshoot and fix that. Finally, the eject gear stripped so I replace that.
NOTE: Camera recorded in the wrong mode -- sorry about the worse than normal picture quality.
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Replacement 3D printed gear I used: (US based)
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Another seller of replacement gears: (Italy based and cheaper)
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Little squeezy bottles: (available elsewhere too)
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