upside down monitor screen

[richardp171]

i bought a jamma galaga game and the game is up-side down. Does anyone know how to fix this? I was told some wires connecting to the monitor needs to be reversed. Is there anyone who knows whicih one?

thanks

[D_Zoot]

Yep,  you'll need to swap a couple of wires around on the monitors yoke.

Bob Roberts has some excellent information on his site about this:

http://www.dameon.net/BBBB/yoke.html

If it's a cab you use other boards in, you should be able to install a switch in the yoke wiring to switch it back and forth,  a quick google search should turn up some diagrams.  But just looking at the pics on Bob's site, it's easy to see what needs to be done.


D

[Ken Layton]

Also check your game board for either a dipswitch setting or programmable software setting to "invert picture".