Last night I was watching Rainman on one of the Dish Network HBO stations when my tv make a popping sound. The picture then seemed to implode.....similar to when you save a service level convergence. Now I did a search on this forum and found that this could be caused by impurities dropping in the crt's and causing an arc or something like that. Well, the problem is that my tv now has these two or three faint lines making a sort of curved zig-zag down my screen on all inputs and picture sizes. The lines are different colors......although they are quite dark. You can only see them when there is something dark on the screen. However, they are quite noticable. Well, that is all the information that I have. If anyone knows what this is, please let me know what to do.....Can I fix it or do I need a service call? Any help is much appreciated.