canoldenew
Beginner
Hi guys - I'm having an issue with a Makvision m3129db1-72. I bought this pre-installed into a cabinet from a local arcade. The monitor is wired in through a cluster of neatly organized wires and 3 fuses located at the bottom of the cabinet on one of it's sides. (The black/white/green cables are spliced into the cluster, not combined into an AC cord.)
I'm not a technically gifted person, but I'm guessing this wire and fuse assembly is either an isolation transformer or is simply there to prevent surges to the various components of the cab (the cab had a ticket dispensor, powered marquee, coin door, etc.). The external power cable is connected to this cluster, drawing power into the cabinet and is connected to a switch.
Flipping the switch turns the marquee light on, but the monitor intself won't turn on unless I go through a bizarre sequence of requirements that I've discovered by tinkering.
I have to connect the monitor's vga cable into a PC, but the PC has to have a fairly high-wattage power supply (won't work from a laptop or compact PC.). Also, I happen to have a cga-to-vga board which has a vga pass-through and component-in, so I can run a component signal into the monitor, but ONLY if a high wattage PC is on and connected to the cga-to-vga board's vga passthrough.
It seems that the monitor is drawing power from PC through VGA, and will not power on at all if it cannot receive enough power that way. The monitor has a switch labeled 1v and 3v - neither setting seems to matter.
The only thing I can think of left to try is to splice out the monitor's power (black/green/white) wires into a grounded AC plug and bypass the fused wire cluster and cabinet switch, and instead just plug the monitor into a standard surge protector. However, I'm not sure of the monitor needs an isolation transformer, in which case, removing it from it's current setup would be dangerous.
So does anyone have any ideas on this? Is the monitor supposed to draw power through the VGA cable? Would that be caused by a mis-step in the previous owners wire/fuse cluster, in which case splicing out a standard grounded cable would work? Or is it likely that the cluster I keep referring to IS an isolation transformer and is necessary for safety?
I'm not a technically gifted person, but I'm guessing this wire and fuse assembly is either an isolation transformer or is simply there to prevent surges to the various components of the cab (the cab had a ticket dispensor, powered marquee, coin door, etc.). The external power cable is connected to this cluster, drawing power into the cabinet and is connected to a switch.
Flipping the switch turns the marquee light on, but the monitor intself won't turn on unless I go through a bizarre sequence of requirements that I've discovered by tinkering.
I have to connect the monitor's vga cable into a PC, but the PC has to have a fairly high-wattage power supply (won't work from a laptop or compact PC.). Also, I happen to have a cga-to-vga board which has a vga pass-through and component-in, so I can run a component signal into the monitor, but ONLY if a high wattage PC is on and connected to the cga-to-vga board's vga passthrough.
It seems that the monitor is drawing power from PC through VGA, and will not power on at all if it cannot receive enough power that way. The monitor has a switch labeled 1v and 3v - neither setting seems to matter.
The only thing I can think of left to try is to splice out the monitor's power (black/green/white) wires into a grounded AC plug and bypass the fused wire cluster and cabinet switch, and instead just plug the monitor into a standard surge protector. However, I'm not sure of the monitor needs an isolation transformer, in which case, removing it from it's current setup would be dangerous.
So does anyone have any ideas on this? Is the monitor supposed to draw power through the VGA cable? Would that be caused by a mis-step in the previous owners wire/fuse cluster, in which case splicing out a standard grounded cable would work? Or is it likely that the cluster I keep referring to IS an isolation transformer and is necessary for safety?