On 4/18/14 1:26 AM, Anders Sandahl wrote:
  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
 
DEC-00-H861A-A-D 861-A,B,C Power Controller Maintenance Manual.pdf