I have a fault with a Sony PVM-20L2MD monitor, it seems like maybe one of the colours isn't working as the image has a very strong red hue. Fiddling with the colour settings on the monitor makes no real difference. I've already ruled out the signal going to the monitor being faulty, but there my expertise ends.

Has anyone had a similar fault and were you able to fix it?

Failing that, can anyone suggest a company who can repair these monitors?