TK70 sticky unload button?

[Peter Coghlan]

>
> I fixed the button (replaced it with a standard push button), but it still
> doesn't want to eject my TK50 tape I put in. Blinks all three LEDs. It
> looks relatively dust-free inside. I may can get some canned air and blow
> it out better, but besides that, is there any more debugging I can do, even
> from the >>> prompt or VMS? I can get a video showing the tape motion.
> Seems to load without issue, but it doesn't really start winding back upon
> pressing the unload button.
>

If the tape has data on it, is is most likely in VMS BACKUP format.  You may
be able to list the contents with something like:

$ BACKUP /NOASSIST /LIST MUA0: /REWIND

You might be able to unload the tape with:

$ DISMOUNT /UNLOAD MUA0:

but you would have to successfully mount it first, either explicitly with
something like:

$ MOUNT /NOASSIST /FOREIGN MUA0:

or implicitly by using the BACKUP /LIST command above.

Regards,
Peter Coghlan.