That lead should go between one of the metal spring clips, and, the metal bell of the tube. This set uses a number of hv capacitors in the hv cage, and, underneath. Value, and, voltage are very important.
As said, the electrolytics are no good. I can see hum patterns on the screen telling me the electrolytics are shot.
This is a 117Volt, 60 cycle ac only set. If you try using it on dc you will destroy the power transformer.
The KCS 47's don't usually use the older white chokes that went bad. These chokes are more reliable.
This set works on very high dc voltages, and, I would highly recommend you get someone to help that knows what they are doing. And, yes, unfortunately, they are not a highly reliable set. I have one I've bben restoring, and, every time it acts like it's finished, something else goes wrong.
It's worth saving, but, it will need a lot of careful restoration.
Good luck.
Bill Cahilll
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