Hello,

Here are a couple of books on troubleshooting:
https://archive.org/details/how-to-diagnose-and-fix-everything-electronic
https://archive.org/details/how-to-diagnose-and-fix-everything-electronic-2nd-ed./mode/2up
https://archive.org/details/electronic-troubleshooting-4th-ed.
https://archive.org/details/trouble...rcuits-a-guide-to-learning-analog-electronics
https://archive.org/details/trouble...ctronics-without-a-schematic-3rd-ed./mode/2up

Bertus

 

Thank you!

 

They're not anymore available

 

I have always liked Sam's Photofacts manuals. They are still sold but many are available free online if you google them! They give the schematics plus annotate the test point values on them plus other diagnostics aids.

 

please upload to Google drive if possible