Message: 24 Date: Fri, 18 Apr 2014 10:26:05 +0200 From: Anders Sandahl <anders at abc80.net> To: cctech at classiccmp.org Subject: PDP-8a Power distribution box schematics Hi, I'm looking for the schematics to the power distribution box that use to sit in the bottom of the rack. I have browsed bit-savers.org but I don't know where too look. Can anybody give me a clue? http://www.abc80.net/docs/pdp8/pdp8a/DSC_2287.JPG http://www.abc80.net/docs/pdp8/pdp8a/DSC_2291.JPG Problem for this one is when putting the switch in local mode the big relay (contactor?) is activated, bit after a white it starts to jumps between activated/deactivated. I measured the voltage over the coil and it decreased rapidly when it happens. The contactor is tested standalone. I have cleaned this up and repainted it, but have no pictures after the refurbishment. /Anders