Hi All
Just my bloomin luck. I have one Taito F3 Mobo with perfect graphics but no sound, and another with sound but graphics glitches with the F3 Multigame Cart (Official cart no problems.) I found that there are 1cm horizontal lines racing across the screen. Interesting thing though is that when I touch the address bus next to of the Xilinx IC U3 (see piccy), then the parasitic noise goes away. Off the top of anyones head, can you advise what this could be???
I will replace the caps around the other boards sound chip and check the traces.
Just my bloomin luck. I have one Taito F3 Mobo with perfect graphics but no sound, and another with sound but graphics glitches with the F3 Multigame Cart (Official cart no problems.) I found that there are 1cm horizontal lines racing across the screen. Interesting thing though is that when I touch the address bus next to of the Xilinx IC U3 (see piccy), then the parasitic noise goes away. Off the top of anyones head, can you advise what this could be???
I will replace the caps around the other boards sound chip and check the traces.