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I suggest:
1. Remove the rectifiers and turn on the TV. The other tubes should light up, but nothing more. No smoke or loud hum. Let operate that way for a couple of hours to make sure the transformer is OK to that point.
2. Disconnect and check resistance to ground from rectifier filaments. Should be very high. Disconnect B+ connection from rectifier filaments. Read filaments to ground. Should be very, very high, megs or more.
3. With B+ still disconnected, put rectifiers back and turn on. That will test transformer and rectifiers under no load. There should be no electrolytics connected at this point so the no-load condition will not hurt anything.
4. If it operates in that mode, the transformer is probably fine and the trouble is in the operating circuits. With power off, trace out shorts with an ohm meter.
At this stage, basic troubleshooting will benefit more that guess work. With more information, the forum will be more help.
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