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Right back at you . . .
The "flyback" transformer that is generating the HIGH VOLTAGE . . .DC . . . for the ultor of the picture tube, coming out of its RED high voltage lead with its attached "suction cup " connector and
usually, its providing ~1000 volts DC per inch of picture tube size
Then there are the additional two minor, reduced supplies.
They are for the Focus and Screen voltages, with their associated adjustment pots.
Usually its10-12 KV DC for focus and in the 750-1000 VDC range for the screen supplies.