What size monitor does it have?
Also, those black & white monitors are largely very reliable and very easy to work on. The only dead one I ever encountered was only dead because rats had chewed through some of the wires, I reconnected them and it came back to life.
Post a message on RGVAC, you SHOULD be able to find someone who can either provide a tested working monitor, test your monitors, or both.
I am in the St. Louis area and can test your monitors, and can provide a tested/working monitor IF it is a 23" model that you need.