Standard res 19" arcade monitor missing "red"

[AlanS17]

I've got a 19" arcade monitor. If the brand and model are important, I can go find them out. Anywas, I'm not getting any red on the screen. The whole color seems to be missing. I had a guy look at it, and he theorized there was a bad transistor somewhere. I don't know enouogh about the inner-workings of monitor to say what the problem might be. Does anybody know where to start? And how much would it cost to fix something like that?

[grantspain]

the make and model are extremely important,but as pointer missing colour maybe down to one of a few things;input signal from game board missing,faulty decoder i/c,faulty o/c drive transistor or tube gun fault
get us the make/model and we can point you to the correct area
a very good quick way of fault finding with this fault is swapping the red and blue wires on the monitor signal input plug,if its a signal problem from the game board then the blue won't work if its a monitor problem then the red will still be missing but the blue will work