I've never seen a monitor it wouldn't work with "out of the box", but do you have the tools downloaded? Try this:
In the Config tool, press the Mode button to toggle to 1.25, save settings, and then try to connect. "Mode 1.00" = 50Hz in PAL and 60Hz in NTSC. "Mode 1.25" = 62.5Hz in PAL, and 75Hz in NTSC.
I'm just guessing, but it's possible yours might be configured to "Mode 1.00" and this might be just a hair too low for your monitor to display. I've always run mine in 1.25 and haven't had any problems.