Newbie's First Questions RCA TS 721 Restoration

[Chris K]

Sorry about the resolution as I just did a quick screen grab. It is the ion magnet and not the yoke or focus coil. It has very limited adjustment. I will take some photos later and post. It is sitting inside a chassis mounted H frame. It looks like a squared off doughnut, about an inch thick and the CRT neck goes through the hole in the middle. It is positioned behind the yoke. It is attached in the frame in 3 places. At the top there's a threaded post on the trap that goes through the horizontal member of the H frame. There's a wing nut holding it in place and a slot in the frame that allows about 1/2" to the left or the right of center. The other 2 threaded posts are on both sides of the trap sticking out horizontally, almost like a center axle. The posts go through the vertical members of the H frame and allow basically the trap to swing in a very small arc. Full swing can move the bottom of the trap closer to the bulb part of the tube while the top part pivots to the rear. Vice versa, when the top is swung forward, the bottom swings toward the rear. But the hole in the center for the neck of the tube is not much larger than the diameter of the neck so the limits of the trap "swing" are very small. I don't know if the metallic ring that slips over the neck behind the trap works with it or has a separate function. It can be slid closer to the trap or back toward the CRT socket. It's just a band of metal with some projections off of it front and rear and there's a slip ring that goes on it, I suppose to put tension on it once it's in the correct place. I watched a shango video where he resurrected a 1948 Crosley 12 inch TV and he had the same situation I have...high voltage...a correctly energized CRT pin socket and he moved a dissimilar ion trap around and got a picturebut he didn't show or talk about what he did and how he did it. Arughhhhhhhh!