Thanks Tony! I replaced the solid state relay with an ordinary relay that I had around and with some small tweaks it worked just fine.
/Mattis 2016-09-08 21:05 GMT+02:00 tony duell <a...@p850ug1.demon.co.uk>: > > > > Is there engineering drawings online for the DEC 871 or 874 power > > controllers? > > I don't know if it's any use, but the 874 printset seems to be here : > > http://oldcomputers.dyndns.org/public/pub/rechner/dec/ > manuals/decimages/moremanuals.htm > > -tony >