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  1. B

    PowerBook 540c hinge restoration: SUCCESS!!!

    Strong work!!!
  2. B

    Anyone have the DaynaFile SCSI floppy drivers? (Nevermind, found them)

    Please share your trials with the PC SCSI floppy drives and the DaynaFile.
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    Steel ball bearing as Duo 250 trackball

    Ebay...19mm steel ball bearing... China of course.  :-)
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    Steel ball bearing as Duo 250 trackball

    19mm steel ball bearing works terrific!   Now I only need a retaining ring. (I don’t want a loose ball bearing bouncing against my glass screen when the lid is closed.) Any ideas for this part in the United States?
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    Steel ball bearing as Duo 250 trackball

    Hello All, I need a replacement 19mm trackball. I have a 19mm steel ball bearing.  Is this safe to use the metal ball bearing as a replacement?  My reason for asking is that I can see what looks like copper at the base of the trackball assembly.  I attached a picture. Thanks, Bama
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