The PDP11/04 has landed..

[Pete Lancashire]

Until one can restore the original power supply, it is pretty easy to
substitute a modern supply, good quality used commercial grade switchers
with remote sensing can but put on a rack shelf. But if you take that
route, be very very careful of Chinese supplies.

On Sun, Feb 7, 2016 at 1:24 PM, Robert Jarratt <robert.jarratt at ntlworld.com>
wrote:

>
>
> > -----Original Message-----
> > From: cctech [mailto:cctech-bounces at classiccmp.org] On Behalf Of Jos
> > Dreesen
> > Sent: 07 February 2016 17:55
> > To: classiccmp at classiccmp.org
> > Subject: The PDP11/04 has landed..
> >
> >
> >
> > Yesterday I picked up the PDP11/04 that Jay mentioned a few days ago.
> > Less than 15 miles from home  !
> >
> > The machine spend its early days as a processor in chemical analysis
> > apparatus, and was subsequently bought by the employee using it.
> > Before he could make use of it better, more powerful, easier to use
> > machines came along and the -11 spend the next 30 years in a garage.
> >
> >
> > The -04 is an entry level machine, and the cards inside match this :
> >
> >      M7263 KD11 CPU
> > 2 x M7264 16K DRAM cards
> >      M7856 DL11 SLU/RTC
> >      M7846 RX01 controller
> > 2 x M7814 DZ11-F
> >
> > and of course the M9301, M9302 and M9202.
> > Alas it has just the simple 2-switch frontpanel.
> >
> > The machine also had the battery backup option, and the lead/acid
> batteries
> > will celebrate their 40th birthday next year !
> > Better not try to charge them....
> >
> >
> > Overall the machine is in very good condition, both CPU and RX01, and it
> is
> > packed in a very nice half-height rack with the red PDP11 bezel at the
> top.
> > Pictures next week when the machine is cleaned and reassembled,
> > restoration is to start next winter, after a house move which will nearly
> > double working area for the hobby.
> >
> > Many thanks to Roland for preserving the machine, and to Jay for acting
> as an
> > interface !
> >
>
>
> I have one of these on my restoration list. I know the PSU does not work,
> and that others have tried to fix it before me, who probably know PSUs much
> better than I do. It has core memory so I really would like to get his one
> fixed. I have never seen a PSU for it come available in the UK or Europe,
> so it looks like it won't be an easy job. :-(
>
> Regards
>
> Rob
>
>
>