djpurpose
New member
QNIC CGM 2500 25" MONITOR - power but no image
Just purchased an arcade cabinet with the monitor inside no board (going to use PC with mame). The person I bought the cabinet from swore the monitor worked but couldn't show it because the power supply was out.
I got it home and since I will not be running a board with this I figure I don't need the power supply. I hooked up a power cord from the wall to the isolation transformer thing that powers the monitor and marque. When I plug in the cord I can hear it get power (high pitch hum) and if all the lights are off I can see the tube neck lightly glowing orange. But no glow comes from the monitor, even tried playing with brightness on the extra board with the knobs for contrast and all but still no light comes off the monitor.
I figured that maybe i needed a video signal for it to show anything so I cut up a vga cable carefully and wired up the composite sync, ground and r,g,b to the monitor board. Turning on the computer doesn't give a picture at all.
The monitor does however flash when I connect the power and disconnect the power so I am hopeful. Here is a short youtube video that shows the monitor when power is connected and disconnected.
http://www.youtube.com/watch?v=sRt5VePeqXM
Specs:
Chassis: QNIC CGM 2500 25" monitor
Tube: RCA A63ADT10X05
Input: PC with nvidia 6600GT vga out, broken out to composite sync, RGB and ground.
Thanks in advance for any help you can provide.
Just purchased an arcade cabinet with the monitor inside no board (going to use PC with mame). The person I bought the cabinet from swore the monitor worked but couldn't show it because the power supply was out.
I got it home and since I will not be running a board with this I figure I don't need the power supply. I hooked up a power cord from the wall to the isolation transformer thing that powers the monitor and marque. When I plug in the cord I can hear it get power (high pitch hum) and if all the lights are off I can see the tube neck lightly glowing orange. But no glow comes from the monitor, even tried playing with brightness on the extra board with the knobs for contrast and all but still no light comes off the monitor.
I figured that maybe i needed a video signal for it to show anything so I cut up a vga cable carefully and wired up the composite sync, ground and r,g,b to the monitor board. Turning on the computer doesn't give a picture at all.
The monitor does however flash when I connect the power and disconnect the power so I am hopeful. Here is a short youtube video that shows the monitor when power is connected and disconnected.
http://www.youtube.com/watch?v=sRt5VePeqXM
Specs:
Chassis: QNIC CGM 2500 25" monitor
Tube: RCA A63ADT10X05
Input: PC with nvidia 6600GT vga out, broken out to composite sync, RGB and ground.
Thanks in advance for any help you can provide.

