I was helping a friend try to fix his Warlords cocktail over the weekend and it was showing a couple of problems. The monitor completely collapsed to a spot, but he had a spare monitor, so that was no problem once I modified the case with a hacksaw to fit the cabinet (thanks for the assist Christian).
The real problem, and I am not sure it is one problem, is with the sprites. The shields do not move around the outside walls, they mostly go back and forth along the vertical edge of the screen and every once in a while they will make part of a swing around the castles.
The other issue is the sprites for the dragon are all messed up. The castles look good, the text looks good, the fireballs look good and the images of the shields look good. The dragon flickers on and off.
From the schematic, it looks like the potentiometers all go to the POKEY chip through a set of op amps. Since all of the pots are acting the same, that leads me to believe that the issue is with any of the commpon components, which would be:
(a) the POKEY chip
(b) the transistors Q7 & Q8
(c) the op amps (possible, but not likely that all 4 would fail simultaneously)
Any other possibilities that I missed?
What other Atari games used the same POKEY chip so I can have him try robbing one from a different game to see if that is the issue?
Thanks for any help. We are trying to get this back running for the annual drunken Warlords tournament at the Houston Arcade Show, so time is critical (the show starts Friday).
Thanks for any help.
ken
The real problem, and I am not sure it is one problem, is with the sprites. The shields do not move around the outside walls, they mostly go back and forth along the vertical edge of the screen and every once in a while they will make part of a swing around the castles.
The other issue is the sprites for the dragon are all messed up. The castles look good, the text looks good, the fireballs look good and the images of the shields look good. The dragon flickers on and off.
From the schematic, it looks like the potentiometers all go to the POKEY chip through a set of op amps. Since all of the pots are acting the same, that leads me to believe that the issue is with any of the commpon components, which would be:
(a) the POKEY chip
(b) the transistors Q7 & Q8
(c) the op amps (possible, but not likely that all 4 would fail simultaneously)
Any other possibilities that I missed?
What other Atari games used the same POKEY chip so I can have him try robbing one from a different game to see if that is the issue?
Thanks for any help. We are trying to get this back running for the annual drunken Warlords tournament at the Houston Arcade Show, so time is critical (the show starts Friday).
Thanks for any help.
ken

