I wanted to get some confirmation before I start swapping out parts. I’ve built a Dr. Phybes (with the 45 and rate LED mods) but I’m getting no signal out. I’ve done a trace and the first problem is I’m getting no signal coming out of pin 6 of IC1. I have 9.4v at pin 7 (Vcc) and getting signal coming into pin 3 (IN+). When I check pin 2 (IN-) I also hear nothing (I’m guessing because nothing is coming out of pin 6 to feed back to pin 2).
What I’m wondering is, is there anything else I should check before I replace IC1 (a TL071 I bought here at guitarpcb)? And, if I replace it and I’m still not getting any signal, what’s the next thing I should check?
If you have done the steps Billy suggested and you still have no signal at pin 6, May I suggest you swap the TL071 from IC1 and IC3. If the one from IC3 works in the IC1 position, you have a bad TL071. Your voltages and signal present at pin3 suggest that this may be the issue. Verify continuity at pin 6 between the socket and the board trace. Your reflow should have ensured that.