picture drifting in arcade monitor

[BigRan]

I just recently had posted about a Wells Garnder 19v1002 well I was able to hook it up it had a 12 pin receptacle in the back where the ac and video went into it I had to do some studying to figure out the wiring back there well when i plugged it in nothing went wrong powered right up, this monitor is a B&W one so what I did was hook the blue pin up first out of the video card well had only a partial picture, so then I went ahead and hooked up green had a complete pic at this point but my problem now is the pic drifts the game will move up and down and the controls on the back of the monitor will fairly correct it at times but wil not hold was wondering if anyone has any adivice is difficult since it is a B&w monitor but i feel it should be able to work for me any imput on what I should do would be helpful, I tired it with vantage and used the command line arcade monitor to get it to work but since I am so new to all of this could it be a software issue or a issue of my wiring the video signal is hard for me to know at this pont so if anyone has any idea to try would appreaciate it.

[Ken Layton]

A black & white monitor only accepts NTSC composite sync and video just like a VCR or video camera would output.

You should be able to find the monitor schematics and manual online easily.