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.jarr...@ntlworld.com> wrote: > > > > -----Original Message----- > > From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of Jos > > Dreesen > > Sent: 07 February 2016 17:55 > > To: classic...@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 > > >
