BA123 Side panels and Stuck TK50

Rob Jarratt robert.jarratt at
Tue Aug 30 17:25:13 CDT 2016

> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at] On Behalf Of Douglas
> Taylor
> Sent: 30 August 2016 17:52
> To: General Discussion: On-Topic and Off-Topic Posts
> <cctalk at>
> Subject: BA123 Side panels and Stuck TK50
> This is real trivia but I have a BA123 cabinet (MicroVax II) and there a screws
> that hold the side panels in place, and mine are missing.  Does anyone know
> the type of screw I should go look for at the hardware store?

The panels on mine just clip on, I don’t think there are any screws. The panels don't stay on very well on mine :-(

> The same cabinet has a TK50 and I foolishly put a cartridge into it and now it
> won't come out.  It is called being 'stuck'.  How do proceed to get this TK50
> cartridge out?

You will have to remove the drive and take the cover off the inner reel. It could be that the tape has become stuck to the heads and you just need to free it.

> Also, the TQK50 controller never saw the drive and I was wondering if the
> PROM's (after 30 years) on the board lose their data?

Not sure, I have never had this problem.



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