[trinescope]

Maybe there were quality problems with these sets as mine also had several bad solder joints that I know of. One was on the 410V B+ line, killing the sweep oscillators and horizontal output intermittently, also causing an arc at the red screen control which had to be repaired using india ink on the end of the resistance track. The other one I found so far was a terminal strip ground in the color amplifier section which lifted the cathode circuits of the red, green, and blue amplifiers, also intermittently.