tv has green screen sometime when it comes on and stays that way?

Due to the age and symptoms described, it's very likely the cathode ray 'tube' has failed.
Other faults, even a minor component failure, can cause a green picture but the fact it's 22 years old, would indicate the tube.

You would not obtain a new tube for this model. It would be a very expensive repair even if a reconditioned tube were available.

I consider a TV's age a bit like we apply to cats 'n dogs, about 7 to every human year, so that'd make your TV over 150! :O)

Cobweb
January 2005