Tube swap convergence: when do you decide the tube quality isn't good enough?
I don't know how to decide if the trouble I'm having is due to my lack of skill or because the tube (or the tube in combination with the yoke from my chassis) isn't high enough quality to give me the convergence on the edges that I'm expecting. Bear in mind I keep the rings with the tube and the yoke with the chassis.
Static convergence is easy. Corners are easy with the addition of a magnet strip. But I'm having trouble getting the centers of the edges to look good. Frankly I'm not sure if I should be able to correct this with the rings (since it seems there are multiple ring positions that work for the center) and I just haven't stumbled onto the right combination yet, or if I should give up and try another tube. I have also tried adjusting the dynamic convergence (yoke) and shifting both the rings and the yoke forward and back but haven't been able to get it much better.
If you were in my shoes, what would you do? Keep playing with the rings (I've probably spent 2 or more hours playing with them)? Solve it with a dozen magnet strips (lol)? Try another tube?
When starting a tube swap I really need to start by looking at a TV image to see how good the convergence is before I even start so I get a sense for how good it should be when I'm done.
If anyone has a set of steps you go through with your tube swaps that ensure a high rate of success, please share in detail! Our community really needs to work on a good tube swap/convergence howto! Everything I have found in my searching has turned up basic information that does nothing to help in tough situations like this out. Just not good enough!
Center of left edge:
Center of right edge:
Center of top edge:
Center of bottom edge:
I don't know how to decide if the trouble I'm having is due to my lack of skill or because the tube (or the tube in combination with the yoke from my chassis) isn't high enough quality to give me the convergence on the edges that I'm expecting. Bear in mind I keep the rings with the tube and the yoke with the chassis.
Static convergence is easy. Corners are easy with the addition of a magnet strip. But I'm having trouble getting the centers of the edges to look good. Frankly I'm not sure if I should be able to correct this with the rings (since it seems there are multiple ring positions that work for the center) and I just haven't stumbled onto the right combination yet, or if I should give up and try another tube. I have also tried adjusting the dynamic convergence (yoke) and shifting both the rings and the yoke forward and back but haven't been able to get it much better.
If you were in my shoes, what would you do? Keep playing with the rings (I've probably spent 2 or more hours playing with them)? Solve it with a dozen magnet strips (lol)? Try another tube?
When starting a tube swap I really need to start by looking at a TV image to see how good the convergence is before I even start so I get a sense for how good it should be when I'm done.
If anyone has a set of steps you go through with your tube swaps that ensure a high rate of success, please share in detail! Our community really needs to work on a good tube swap/convergence howto! Everything I have found in my searching has turned up basic information that does nothing to help in tough situations like this out. Just not good enough!
Center of left edge:
Center of right edge:
Center of top edge:
Center of bottom edge:

