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Originally Posted by captainmoody
I doubt that the power transformer will get hot, It's a 25 cycle unit!
Remember this tv was "Canadianized" when it was originally exported to that country.
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It must be a biggie! A 120V 25Hz transformer will work on 240V 50Hz just
fine. HOWEVER the rest of the set will become rather unhappy with all of the secondary voltages being double
If you really wanted to, you could split the 6.3V heater tubes into two equal current halves, and feed those halves with the old 6.3V now 12.6V heater winding. The high voltage secondary (I assume has a center tap) will be double its old voltage, so I'd use just one section of it feeding a bridge rectifier composed of the 5U4 or such rectifier tube the set uses for the positive end, and a pair of silicon rectifier diodes for the negative end. Also the 5u4 heater voltage will need to be reduced. I doubt that anyone would want to go to this much bother.
But it would be much easier to just use an autoformer to convert the 220V to 120V, and the set stays closer to original.