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What I did was remove the rectifier. That its self deisconnects 3 leads. Then I removed the two leads going to the small strip with a B+ fuse (I thiink). I removed a lead that goes to one of the filters and I think one that supplies the heater string. I also disconnected the ground side if the line filters. This should have eliminated the short if it were in any of those circuits. I applied AC from the wall and still have a heavy current draw. The transformer hums like it is working its a** off what little time I can leave it on, which is a matter of seconds. The line chord will get hot and there has been a burning smell. I have nearly every indication that the trans is bad.
The megohmmeter does not help as much as I thought. I have compared the readings I get against other sets with known good transformers and they are similar. I was told that I should see no more than around 10M Ohms on the 250v scale and if I saw low readings that would indicate a short. I get nearly the same reading from say either side of the line input to ground. Also I get the same reading from one of the secondary leads going to 5u4 and to ground. The rest seem to be isolated. I will say that the motor tech that loaned me this hand crank megohmmeter is not a television repair man but he is trained decently and spends a lot of time finding shorted field coil windings in electric motors. We thought that a power transformer would not be much different.
Also I have to watch swapping from other sets because I have noticed that even though many RCA chassis use what looks like and many times are the same value components, it is not a given. This ct-127 has a different trans than my 8T-243. Probably the ebay 9T set will have the same one as my 8T. Hopefully something will pop up. On another thread someone said these trans. are pretty common. Hope so!!
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