jeu. 10 mars 2016

Tektronics 2445 scope PSU repair: part 1

I've recently took my good old Tek 2445 scope from the cellar (along with my {tag}HP8904A signal generator), and it showed signs of tired PSU: unstable display, noise, then the typical noise of a capacitor failure.

Here is the beast:

My old Tektronics 2445 scope

And some pictures of its womb:

The main analog board. Top view of the scope.

The PSU consists …