HP 8672A Signal Generator Repair - Part 1

To help calibrate some of my attenuators I bought this 8672A Signal Generator - It goes from 2GHz to 18GHz so it should be ideal for ensuring that my attneuators are working.
However it wasn't working itself - So in this video I take a look inside to see if we can find out what was wrong and fix it.

[@PelDaddy]

Nice trouble shooting. Always check those power rails!

[@JakeShepherd]

I just bought one of these and I have no idea what I am doing, it powers on but does not even show numbers. ahh Help