On Sat, Sep 30, 2017 at 6:33 PM, Aaron Jackson via cctalk <[email protected]> wrote: > Hi all, > > Instead of jumping straight in and ordering an SLU, I decided to check > the power supply voltages. My +12V rail appears to be only giving about > +4.6V
That does not sound fine. > This is an 11/23+ chassis and the power supply seems very large What type of box? BA23? BA11-M? BA11-N? You said "11/23+" which could easily be a BA23, but it's not a guarantee. In particular I ask because I'm sifting through a pile of DEC Qbus backplane and PSU assemblies for, I think, a BA11-M, and these have two PSU modules, one that takes in mains and provides +5V for the backplane, then a smaller board that taps two cables off the main PSU and provides +12V and -12V. Both of these bolt down to a common mounting bracket and have to be removed as a pair then each unit can be removed from that. The other Qbus supplies I have worked with are single-unit affairs. Any sort of Hxxx number you can find would be most illuminating. -ethan
