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Sounds like your over half way there lol..
You now need to check the resistors positioned near the convergence ic's. They are your likely problem and go bad often when the ic's fail.
They are normally about 2watt and the values will vary but normally are like .10 ohms to 1 ohm.
I cant find a schematic to give you the exact values and locations but if these resistors measure off value at all you need to replace them with the exact value of the originals.
On that chassis the only fuse affecting convergence is a 400ma pico fuse near the flyback transformer. If this fuse is open the signal board will never send the "ON" command to the convergence supply so the convergence will be dead.
If the pico isn't open then suspect the amps themselves or possibly an open resistor or two.
Did you remove one side of the resistors from circuit to check them? If you leave them in circuit a blown resistor will test good as it will read the resistance from the surrounding resistors. Usually its the 3.9 ohm resistors identified bu the bands orange,white ,gold and red. and also the 150 ohm identified by the bands brown, green, brown and gold
the B= feeding the convergance ic's will have a fuseable resistor or a "pico" fuse, ( looks like a small resistor but no color bands). try looking for one of those, I would suspect it will be near the ic's themselves, but some put them in the power supply circuit.