FYI, you HAVE to rpelace all 3 guns anytime there is an issue with them…
the 2 remaining guns have lost some of their brightness, if you just replace the green gun, the greens will be out of spec and you will have a green hue on your TV…
this can be compensated for a lil bit on the tV< but not if the tv is old…
repairing/replacing CRT tubes is a giant PITA and you can really shock yourself… good luck