Rear Projection Projector In My Rear Projection Tv, Each Colored Projector Has A 1" Rubber Ball Mounted At Its Base. What Do These Do?

4:08 PM Posted by Kirsten Shackelford

In my rear projection tv, each colored projector has a 1" rubber ball mounted at its base. What do these do? - rear projection projector

They are for coolant on the tube. Each tube has a tube of coolant, if the TV is turned on. I am over 35 years in the repair of these units.