On Tue, 4 Oct 2011 13:17:53 -0700 (PDT), klem kedidelhopper
wrote:

This unit has a tape stuck inside. It will power up and then after
about 2 seconds shuts down and displays FO4. Does anyone know what
this code means and what is the fix for it? Thanks, Lenny


Lenny,

There is a worm gear that drives the tape mechanism which cracks.
Replacing it with the modified part, cleaning the mode switch, and
replacing the pinch roller elevator grease should fix it. Chuck