They now call the device you need, an octopus.

BR-549, He is using a Huntron Tracker I believe this is a modern version of an Octopus.

 

Pardon me. That is quite a gadget.

I used a filament transformer and an old analog scope I found in the boneyard.

Of course most of the boards were probably just simple gates and easy to spot.

But it did become a valuable tool.

Does anyone do commercial component level repair anymore?

Maybe motor drive repair?

I would think it's mostly just changing out boards.

But as you see I am not up with it.