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You've got the Electrohome B/W X/Y monitor.
It may be just a cold solder to either the molex connector to the 4 yoke wires or one of the connectors that go to the pairs of transistors on the frame or both of the transistors are bad. You picture doesn't seem to show any "flame outs" so that's a good sign.
Remove the board on the side (not the power supply on the bottom of the frame) and reflow the male header pins.
Should be an easy fix for anyone familiar with X/Y monitors.
FYI, Never assume a CRT is discharged just because it has been sitting. Always discharge before handling.
Even if you discharged it to remove the 2nd Anode, discharge again when you go to put it back on.
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Lake Forest, CA