Adams, NE
Quoted from Robotworkshop:I'm not getting background sounds even when I have the settings enabled for them. Also from some of the YouTube videos it appears I may be missing a sound or two so I expect that I have a bad connection on one of the sound select lines. I swapped sound cards since I had a spare and it acted the same. Also have another driver I can try in case there is a TIP out or other predriver. Once I have it all working I'll use it to verify and fix my spares so those will be ready if needed.
Here's my repair notes from when I had background sound missing:
Green ROM background sound = 31
00= OFF
01= ON
Yellow ROM background sound = 33
00 = Off
01 = ON
This game had Green ROM, set to 01 on adjustment 31, and still no sound.
Q13 on the driver board generates the background sound. Following this signal back led to a bad chip (PIA IV). Once I replaced this chip, the sound was back to working.
