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Originally Posted by captainmoody
He's just stepping down the 220 and has a PAL to NTSC converter that he is using on the set.
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Hello, let me enter your discussion. I have a 230 to 117 volts converter which is working well (output is 117 volts.) The set has an extra transformer for the 405 volt d.c.. The transformer remains cool even after watching two hours tv. This is ok. The origin transformer in the set generates only the heating voltage, which is with 6.7 volts more than the regular 6.8 volts. The tubes are little overheated. Is this acceptable or should I lower to voltage to 6.3 volts?
The signal conversion is easy with a dvd player. I can switch it to NTSC with 60 frames per second. For the conversion of the local tv program I have a PAL to NTSC converter which converts only the carrier from 4.43 mc to 3.58 mc. With vertical hold I tune it to 50 frames, the line frequency is nearly the same with 15,625 cycles. Some trouble I have with the video impedance of 75 ohms and 1 kohms, the input overdrives.
The flyback is getting hot after one hour, appr. 60 degrees celsius. I am not shure about its condition. Wax is leaking. I have conservated it with "Plastik 70", a kind of pourable plastic. The focus control (200 kohm) is bad. But I have to check the whole horizontal output unit.
Here in Germany we are only two collectors of old U.S. tv sets, as far as I know. The other one lives near Munich, he is also looking for a flyback for his ctc5 which is not in working condition, and I try to help him. He has sent me a rf-modulator with the correct audio if (4.5 mc), this is neccesary because the PAL carrier with 4.43 mc is very close to it.