answered question 4/27/2009 I Need To Replace The Coolant In The Green Color Gun Of My Mitusbishi Rear Projection Tv (model Vs 5043). Can Anyone Give Me Step By Step Procedure To Do This? Wow, I didn't know there was such as thing as coolant. I am thinking my color Gun is bad, but I noticed when I touched it, it was extremely hot. Wonder what that would cost to fix. Any ideas on that?