Main > Monitor/Video Forum
sync problem with arcade monitor video amplifier ultimarc
buttersoft:
Hah, i was actually going to say you should check the pins on the VGA cable, but i thought you'd said you were powering the amp externally.
So, it needs both external power and internal VGA power?
ninjitsu12:
So Buttersoft, actually the video amplifier it needs the video card to have 5 volts on pin 9, if not you will need to solder a wire to the back of the amplifier board, and connect this wire to the source of the computer you have the 5 volts.
I'm sending the photo, where you should solder the wire.
Zebidee:
I was using my Ultimarc video amp the other day, and thinking how much I wished it had a soft LED to let you know it was powered.
ninjitsu12:
It's true Zebidee, it would be easier if he got into trouble.
Zebidee:
Easy to use a digital multimeter to confirm appropriate voltages on the amp's RGBS outputs