Sounds like you may have just left one of the wires loose from the red tube. Not likely an issue from the gren tube but you can always cover the top of the lens and let just green shine up. That may help narrow it down also.
Here is more detailed info for you also.....
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 SOLUTION
What you will need to do is replace the coolant and clean the crt. You can get a repair kit from TvRepairKits.com
. It includes replacement coolant,step by step instructions, support, etc.