Well, perhaps it was the success I had reviving my Blasteroids pcb, or I'm just a glutton for punishment, but I've been poking around my Q*Bert boards. I have a problem with the sound and main cpu, but thought I'd try my luck with the sound board first. I'm totally missing speech, so I've started looking at the schematic to see what I can do before I have to throw in the towel and send these things off for repair. I really want to get better with pcb repair and I figure there's no other way than to get my hands dirty. Anyway I see what I think may be the problem. At U9, pin 13, which should be the enable for the latch, it never goes high. It's constantly low and according to the data sheet, it has to go high for the data lines to pass anything through, which doesn't sound like it's doing that. Does this sound correct? I've tried tracing that signal back all the way to the 6502 and I haven't found anything wrong unless I goofed on a reading. I'm sure I'll have to go back and check that area again assuming I'm on to something. Pin 3 of the 6502 CPU chip is showing high/low activity according to my probe. Any thoughts? Thanks.

