I acquired a bunch of oscilloscopes a while ago, some of which were totally unrepairable. One was a Tektronix 455 which was missing several boards, several knobs and was literally a bucket of parts. So now I got around to piecing it out, saving the things that might be useful to someone to repair their gem. I come to the high voltage module. A quick web search shows a lot of interest in the module, with little or no supply, so I desolder it. Not a lot of information on the part itself, but between the schematics for the scope and the connections on the board you can figure it pretty well out. A layout for the module along with the internals copied from the schematic are attached. A small contribution to the body of knowledge.
Checks indicate that the diode connected to pin 5 is likely blown open. The question is: Is it worth digging into the potting on the module to try to repair this. Would anyone want this after such a repair? Or does anyone else want to give this a go?
As an aside, anyone interested in other parts out of the 455 can PM me. I am sure we can arrange something.