BTW, how do you know all this stuff about exact values to expect, silicon vs germanium diodes, which components are most suspect, etc? Are you getting all that off the schematics I sent? Or is that just a lifetime of electronics experience speaking??
I have just noticed this.
Well ,
Some info is found in the schematics, like part numbers of devices and some voltages.
Other is analyzing the schematics and calculating/estimating.
Others are "general expected values " of devices values like Si vs. Ger
In general ,
I would say electronics experience and knowledge build over years,
in this kind of work it is mostly repair technician experience.