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I am jumping in this discussion because I am trying to restore a 130 scope too and , being unexperienced, I need advice.
I have just started testing by powering the scope slowly with a variac. All went well up to 70 to 80 V when the main fuse blew, a 2 A fuse. Started again and now the new fuse seems to hold for hours with a total consumption of roughly 1 A at 115V, it's nominal line voltage. Does anybody know what the blown fuse was likely due to? Capacitors? I have been warned that capacitors are the main cause for failures after long periods of inactivity. No sign of a CRT luminous spot. I checked the AC voltages at the transformer secondaries and they are all ok. What's next? I imagine the DC HV voltages. Any special precautions other that the obvious ones? They all seem in the hundredths of V from the schematics. I still worry about the blown fuse, do I have to check insulations at low voltage before powering up? Are the PS capacitors the ones I need to be particularly cautious about? Should I check them separately at low voltage?