I got this "parts for repair" Tektronix 465 scope on ebay a couple of weeks ago. I thought it might be fun to try to resurrect it. It was fun indeed! If you want to go down this road here are some helpful links:

http://www.tek.com/support/faqs/where...
http://bama.edebris.com/manuals/tek
http://w140.com/tekwiki/wiki/465
https://groups.yahoo.com/neo/groups/T...

TLDW: bad capacitor replaced. now it works.