What Causes Green Fecis What Causes Green Hue And Flickering On CRT TV?

What causes green hue and flickering on CRT TV? - what causes green fecis

I have a CRT TV (not plasma or LCD) and recently, while at the green on the screen and the lines sometimes appear through it, it flashes so fiercely. What is the cause? TRC going? And I can easily replace, or should I buy a new TV?