PDP-11/83 Power Supply Wierdness

From: Christopher McNabb <cmcnabb_at_4mcnabb.net>
Date: Tue Sep 9 19:48:00 2003

On Fri, 2003-09-05 at 14:08, Kevin Handy wrote:
> Christopher McNabb wrote:
> >My PDP-11/83 has recently (past few weeks) been displaying some odd
> >symptoms. The system is a PDP-11/83 in a "Corporate Cabinet". Most of
> >the time, when the power switch is turned on, the "run", "halt", "ready"
> >lights blink on then go off. Also, the Red light on the TK-50 will come
> >on then go off. You also hear a relay closing and opening in the rack
> >power supply.
> >

OK, after playing around with it tonight it looks like the problem is in
the on/off switch on the BA-23 box. If I push on the switch REALLY hard
then the system will stay on. If I let the pressure off the switch it
almost immediatly shuts off.

So, anyone know where I can get a replacement switch?

Does anyone know how the switch is wired so that I can jumper it should
a replacement not be available?

Christopher McNabb <cmcnabb_at_4mcnabb.net>
The McNabb Family
Received on Tue Sep 09 2003 - 19:48:00 BST

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