Thank you Ken for the info... I went to check out three Galaxy machines at a bar looking to get rid of them. What I found, that I thought was peculiar, was that all three machines seemed to have the same issue. When we powered up the machines, none of the monitors would display anything. The owner had bought new RCA cables but that did not solve the issue. We even tried switching out monitors but to no avail. Both the upper and lower lights lit up but no display on the machines.
Any ideas? I didn't want to commit into purchasing one of these machines if I could not get a replacement part, especially since I couldn't narrow down exactly what the problem was.