A trick I picked up from Tangent is to remove the opamps from their socket(s), and ohm each socket pin to ground while looking at the schematic. See if they a) are the same between the two opamps, and b) make sense for what you should be seeing. If everything looks ok here, then ohm adjacent pins out. These two tests will show you whether the feedback loop is connected and configured correctly, etc. Other than this, the jacks being connected correctly and the pot, etc. are pretty much all that is left. And the PSU section. I assume you have already verified that you are getting +/- V/2 at pins 7 and 4 on each of the opamps?
post #16 of 17
11/4/10 at 10:24am
