Hello,
I am helping a friend with an MK2 machine, there is a huge colour distortion running through the middle as you hopefully can see in the pic, this was with it throwing out a blue monitor test

The only question I have is will a degauss help with this problem.
I know I am meant to have a monitor model when posting but I don't have access to the machine and was just checking if a degauss will be useful, before borrowing a wand.
Thanks