I've spent a little more time going over each solder joint on both bords making sure that they're good, and that there aren't any shorts. I used this picture of the boards and the traces along with my multi-meter to trace back from my problem area, IC7, through IC8 (SPDT switch) back to the tuner. All the connections appear to be fine. All the components are oriented correctly. I don't know what else to check at this point.

I can borrow a scope from a friend if there is someone out there who can tell me what the signal is supposed to look like in a few places.

I'll keep posting my findings, but at this point, unless it comes to me in a dream, I'm afraid I'm pretty much stuck.

The thought of just shorting pins 2 & 3 on IC7 had occurred to me, but I don't feel that's a proper solution. Besides, I have no idea what side effects that may have.

-Randy