falco wrote:One thing I have to admit I'm curious about - if it's magnetic convergence (like practically all monitors really), how has it ended up with bad convergence? I assume it's bad all over the screen to the same extent? It's kinda weird. As you can see in the picture, these are supposed to have a blob of glue on them from the factory so they can't move. It's all relative - if the rings, the guns, the shadow mask, and the phosphor haven't moved, it should be very reliable. If any of those have moved apart from the rings, you have bigger problems anyway, but that's hardly likely given the symptom.
Thought - have you opened it up and made sure the magnetic ring assembly hasn't come loose on the tube neck? I have seen them where the rings are all still glued to each other, but the clip that holds them all in place has come loose and they're floating around. That's pretty easy to put back. The clip I'm talking about is the one in the picture nearest the tube base board.
Haven't opened her up yet. May play with it at a later date. I remembered the screen burn after I'd posted this, somewhat put me off making time for it - next on my project list is actually trying to start my Model 30 with my Model 56 PSU.
I believe it's worse in the top left corner, but to confirm I should really put a test pattern on the screen. Once you're in a game or GUI you barely notice, just white on black text - which still looks white but hurts the eyes - then you look closer and see solid red pixels 1 up and 1 left of where they should be.