Tech help needed. I disassembled my project F-14 and did a bunch of fixes. Before disassembly the sound was working fine, but since reassembly half the sounds are gone (the group 00-07 in the sound test, which represents the voice callouts) but the rest of the sounds (the music) all work. I believe that all connectors are correctly placed, including the ribbon connector.
I actually have two sound boards, both with these chips: U-19 1-1 and U-4 1-1. In one of those boards I put in new chips, and in the other board I left the chips alone. I've swapped both sound boards in, but with no change in sound behavior. Therefore, I think I can eliminate the sound board as the culprit. Yes?
In the CPU, I've already tried replacing chips U21 1-1 and U22 1-1, with no change.
My other marked chips on the CPU are U26 Rev 1 and U27 Rev 1. I have not touched those.
Should I replace U26 and U27? If so, where do I find those? Any other ideas?
Please help! I miss hearing "You D-D-D-Die!"