A black arc appears on the top and bottom of the screen and the images have red and green shadows.
You have bad convergence ICs, requires disassembly and soldering to replace, quan (2) stk392-120 can use 150s or stk394-160 also.
they are located on the SSM CBA facing back left side, many delicate cables , torx 10 screws also look for any discolored 6.8ohm resistors near the ICs, usually (2) burnt resistors. most shops charge around $300 for the job done in house. Also will need to check that the yoke aren't loose and tilted (philips had black tape on some). and you may need a fluid change by now on the Blue and green CRTs (a professional job for sure). good luck !
Eric
I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771
I have a 42 in and the screen has a black horizontal line
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