You have one of two problems. Sometimes both.
Problem #1) CRT Fluid is Cloudy
tubes have a liquid coolant that is used to keep them from overheating.
After many years the coolant in the blue and green tubes will become
cloudy and cause the screen to look dull, red/orange, etc. You may even
see halos around images.
Picture of a set that needs the fluid changed.
TV set after fluid change
What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com
that includes replacement coolant, photos. instructions, etc.
Your TV may have a convergence failure. ( common problem )
Here are some of the most common symptoms and example photos of a convergence problem
- Screen looks 3D
- Colors don't line up
- One or more colors can't be adjusted when using the convergence menu.
- Screen is bowed or warped.
Here are some photos of convergence problems.
Here is a quick test....
Using your original remote go-to the tv settings then goto the convergence section.
Try to adjust the red and then the blue convergence.
You should be able to move them up, down, left, and right.
If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.
Solution # 2
will need to replace the convergence chips and possibly some
convergence resistors and pico fuses. Its a fairly easy DIY job or you
can hire a pro. If you want to do the repair yourself check the site www.TvRepairKits.com
Their kits include a step by step picture instruction guide, original
OEM parts, convergence resistors, pico fuses, thermal paste,
email/phone support, etc.