I've just bought a Jamma cabinet and it has a problem with the monitor.
When I turn it on, the monitor powers up and the picture appears in full colour. A few seconds later the picture starts to get darker and fades to dark red then vanishes.
The game is still working fine in the background as is the rest of the cabinet. Turning the cabinet off and on doesn't make the picture come back, only leaving it off for a while displays the picture for a few seconds.
The monitor is a Hantarex MTC 9000. Any idea what where I should start?