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The B+ is probably too high. Normal B+ for these sets is around 140 volts. There are 3 caps in the power supply that you need to change. IIRC, they are a 39uf, 2.2uf, and 15 uf. You can use a 47uf in place of the 39uf. They are located on the right front corner of the main chassis. There will be an IC and a transistor mounted on a heatsink in the area where the caps are. Also, check the chopper transistor (the one mounted on the heatsink) for a short. If it's shorted, the IC is probably bad as well.
One last thing (which should probably be first on the list). Check the horizontal output transistor for a short. If it's shorted, there is a blue cap located close to the transistor that may be swollen.
But, whatever you do, replace those electrolytics in the power supply!
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