RCA TRK-120, without its TV chassis

[tubesrule]

Steve,
Check out the TRK12/120/9/90 schematics in the Red Books. If you look at the power supply sections you'll see they have the main filter cap values (and a few other parts), in both the LV and HV sections, shown with a second value in parenthesis for 50cycle operation. For instance the HV caps are shown .03uF (.1uF 50 cycle) This is also the same on the TRK5/TT5 schematics. I have never seen a set that was actually setup this way, but perhaps this was for the LA market.

There is a section in the manual on the differences between the 50/60 sets. It mostly outlines the capacitor value changes, the transformer changes, the the LV rectifier changing to a 5T4. One very interesting aspect is these sets still ran on 60Hz video so the wobble in the picture when running them on 50Hz mains must have been a problem. They used a metal crt sleeve instead of the cardboard one and a double wall metal sleeve over the yoke. Still I imagine wobble would have been a problem.

Darryl