Building Mame cab - stuck - any ideas??

[pvfoy]

I've got my cab, jpac, arcadevga card and computer all wired up.
All lights illuminated on jpac.
But just getting a blue monitor that ripples a little when i hit the 2 player button!!??

any ideas pleeeeeeeeeeeeese
it's driving me mad - i want to play gorf!!

i've ordered a pcb to test the monitor but it hasn't arrived yet
the guy who sold me the cab said it was working fine?

thanks

[RayB]

What software is running?
Did you try forcing MAME to use a low resolution, like 320x240?

[pvfoy]

using xp
but not even getting the bios screen on the monitor on startup so can't even get as far as mame?!!

[cdbrown]

able to connect a pc monitor up to the pc and see if it all works?

[pvfoy]

the arcadevga card has only a 1 port  - for a jpac connection - so no i can't, but i have enabled agp on the bios.

did test the machine with a pc monitor when it had a pci vga card in and it worked fine.

i have read problems people have with arcadevga drivers but i'm not even getting a bios screen ? so as to allow me to f8 and install the drivers - just a blue monitor?

[RayB]

From what I recall from a bit of reading here and there, most newish arcade monitors default to a blue screen when they get no signal (can anyone confirm this?).

The fact that pressing a player button causing a ripple is a bit disconcerting. Do you perhaps have your connections mixed up? Did all buttons and joys work when you tested with a PC monitor?

Try testing with all controls disconnected. And double-check your JPAC jumper settings.