My tv keeps changing to a tint of green. Anyway to fix this without taking it to the fix it man?

Question

The tv i have is quite old and is a NEC

Answer 1

we had the same problem many times but it sometimes it changes to red not green

and sometimes it changes to blue

we couldnt do anything to bring back the original colors except by calling a man to come and fix it

it is the only way

i think

Answer 2

sometimes that happens if you have something magnatic around even a speaker to close just look around make sure