Hi everyone
(my first post here ;-)
I wanted to share this - as this same model was mentioned on this a forum in a post a while ago...
A couple of weeks I came into possession of this scope - in fact I rescued it from imminent disposal

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When i opened it I was surprised to find the inside perfectly clean with no dust and in pristine state, with all the original components, no sign of replacement.
I gradually powered up the kit with the variac. It powered up but there was nothing on the display.
Luckily the scope came with the original manual and all the schematics. I shorted the vertical and horizontal deflection signals and the dot was there; eventually I found the problem in the trace intensity pot, which was open. After a generous dose of contact spray, the trace came up on the cathode ray display.
The next problem was the distortion of the trace, both vertical and horizontal. With no input signal, the distortion showed a 100Hz periodicity, hinting at ripple on the rectifiers. In fact, 3 out of the 5 big electrolytic caps (125uF) were exhausted. I disconnected them and installed 3 new new ones, discretely placed, leaving the originals in place.
And that was it. It works like new - all the controls are ok. A 60 years old (at least) instrument - I found it listed in 1959 Tektronix catalogue!
I am amazed by the quality of the kit. The components are numbered according to the circuit they are in - identified by the first digit. All the the passive components are racked into ceramic strips, all is easily accessible and straightforward to trace. The manual is excellent.
Amazing kit!
Here are some photos
Cheers to all.




