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Old 05-22-2015, 08:54 AM
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tubesrule tubesrule is offline
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Join Date: Jul 2004
Location: Michigan
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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
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Last edited by tubesrule; 05-22-2015 at 09:02 AM.
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