On 5 Feb 2014, at 05:26, Cory Smelosky <b4 at gewt.net> wrote: So, my VAXstation 4000/60 shut off and I had difficulty getting it to turn back on. Seems like a not-to-abnormal situation, right? PSU's getting old or overheating protection kicked in? That's not the weird part! It may have overheated, I do know power switches can get flakey in VS4000s but the symptoms tend to be it won't turn OFF not on't turn ON but I guess if the switch is not contacting correctly it could be that too. the switch isn't, as far as I can tell, directly controlling the current, it is in some kind of latch circuit that unlatches when you flick it to 'OFF'. I think it's an early 'soft-power' implementation. Full explanation: http://dectec.info/vaxstation-4000-power-switch-issues-and-cleaning/ Also talk to Mark Wickens, he's had a few issues with 4000/90 PSUs. When I rebooted the system...it had decided it was suddenly /2015/ and all the licenses expired. I've heard of systems resetting to the past when something happens...but NEVER the future! That is odd, but Mark W remarked on my blog about one PSU failing and spiking his 4000/90 so badly it fried several parts, it's possible it could have upskittled the TOY clock? -- Mark Benson http://DECtec.info Twitter: @DECtecInfo HECnet: STAR69::MARK Online Resource & Mailing List for DEC Enthusiasts.