You got a good TV model there.
You may be able to blow some of it out, either by yourself or with a can of compressed air. There should be a small gap to blow into at the base of the lens.
If that isn't good enough, it is fairly easy to take the lenses off; I've done it a few times.
I can't remember exactly about Mits lenses, but there are 3 or 4 screws or bolts connecting it to the CRT. You should be able to identify them. You should work with the TV off. Use a clean microfiber cloth or something for camera lenses to clean. Be sure to seat it completely when done; wiggle it slightly to make sure it's seated. If it's not, your focus will not be uniform across the screen.
For focus, I think you'd be best off going in from the back if possible, but I don't remember if that model allows that. Here is the condensed version of how I'd do it. If you can go in from the back, take the back panel off. If you can't see the screen from the back after you took the panel off, you probably will have to find another method. Dim the room lights. Use a test DVD and display a crosshatch or circle hatch with as fine lines as available. Drape a thick, dark blanket over the front of the tv. Look at the back of the screen from the hole in the rear. Cover the other 2 CRT lenses with microfiber cloths or hand towels. Gently peel back the 2 pieces of thick black velvet tape on the lens. Focus for the center of the screen. Use back and forth action. When you have it, reapply the tape and move on to the next crt.
You may be able to blow some of it out, either by yourself or with a can of compressed air. There should be a small gap to blow into at the base of the lens.
If that isn't good enough, it is fairly easy to take the lenses off; I've done it a few times.
I can't remember exactly about Mits lenses, but there are 3 or 4 screws or bolts connecting it to the CRT. You should be able to identify them. You should work with the TV off. Use a clean microfiber cloth or something for camera lenses to clean. Be sure to seat it completely when done; wiggle it slightly to make sure it's seated. If it's not, your focus will not be uniform across the screen.
For focus, I think you'd be best off going in from the back if possible, but I don't remember if that model allows that. Here is the condensed version of how I'd do it. If you can go in from the back, take the back panel off. If you can't see the screen from the back after you took the panel off, you probably will have to find another method. Dim the room lights. Use a test DVD and display a crosshatch or circle hatch with as fine lines as available. Drape a thick, dark blanket over the front of the tv. Look at the back of the screen from the hole in the rear. Cover the other 2 CRT lenses with microfiber cloths or hand towels. Gently peel back the 2 pieces of thick black velvet tape on the lens. Focus for the center of the screen. Use back and forth action. When you have it, reapply the tape and move on to the next crt.
