I'm having an issue with the sound on my Q*Bert .
All of the sounds are normal except the music (level intro music).
It sounds similar to over pre amplification (destorted) I have adjusted all related volume and gain pots and the destortion is present at all volumes.
I haven't really checked into this in depth other than checking the schematics and I happened to have a spare LM741 which I swapped @U22 and the problem persists. I have verified all voltages to be correct. I am suspecting the MC1408 @U20 (D/A converter). I just thought I'd check to see if anyone has ever experienced this same issue.
Greg
All of the sounds are normal except the music (level intro music).
It sounds similar to over pre amplification (destorted) I have adjusted all related volume and gain pots and the destortion is present at all volumes.
I haven't really checked into this in depth other than checking the schematics and I happened to have a spare LM741 which I swapped @U22 and the problem persists. I have verified all voltages to be correct. I am suspecting the MC1408 @U20 (D/A converter). I just thought I'd check to see if anyone has ever experienced this same issue.
Greg
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