My 25" Wells has a bright skinny line going across teh middle of the screen. Looks like brightness, hor. pos still are working. Line is about 1?8inch wide and very bright. What caused this?
If it's a K7400/K7500/U2000/U5000 - then the problem is most likely either U601, R303, D603 - or any combination of the three. but check the vert pots on the remote board, too.
If it's a K7000, then check the same pots, then go to IC3...