General Category > Lisa Troubleshooting and Repair

400k floppy drive and floppy emu going crazy

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Kelly king:
     
       Was able to get the WOZ chip (IWM) from John Woodall.
        This did not resolve the issue with floppy drive. How hard
        Is it to replace the floppy drive ribbon cable well within the 2/10.
         The I/O board works perfectly.
               Thanks

sigma7:

--- Quote from: Kelly king on June 13, 2025, 11:08:39 am ---How hard is it to replace the floppy drive ribbon cable

--- End quote ---

It is not difficult to replace the complete ribbon cable assembly.

The keyboard jack/power button board connector has ejector ears that you spread apart to disconnect the ribbon cable (can be done even with the top cover in place).

The motherboard card edge connector is fastened to the chassis by the two screws/nuts at either end.

If you can determine that the fault lies with the ribbon cable's floppy connector itself, you can crimp a new connector onto the cable (and cut the malfunctioning end of the cable off with scissors).

Crimping on a 20 pin connector normally requires a vice or press as well as a bit of finesse or 3 hands; ask for tips if trying it for the first time.

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