Of course, I spoke too soon. After getting it together and racking it, I see that I have 2 channels that're working, but the other two are only passing some audio. Here's the breakdown:
Channel 1: Passes audio, but turning the gainswitch doesn't do anything, until the last position, when it jumps all the way up to feedback city.
Channel 2: Passes audio, turning gainswitch up same as above, but no big jump at final position.
Channel 3: All good.
Channel 4: All good.
Any ideas? I'm surprised there aren't folks on this thread, as DIYRE has started selling the boards, again. I'm gonna check the Litz wiring diagram, again. I did the CAPI litz on the two that aren't working, and their wires are different colors, than the normal 2503s. Maybe I switched a couple around.
Update:
Voltage test points all check out and swapping opamp for tested opamp has no effect. Also transformer wiring looks right, if I'm reading the CAPI specs pdf correctly:
http://www.capi-gear.com/catalog/images/gallery/2503/2503-Litz-specs.pdfBy my reading the wiring should be left = right (black = brown, red = red, etc). If that's right, I appear to have them soldered to the correct pads. Builds are all pretty much identical, with the only difference is the two that don't work have CAPI iron and the others have Cinemag. Never had an issue with CAPI iron, before, and so I'm thinking there has to be something else causing the issue.
Update II: Jeff @ CAPI has confirmed that I read the spec sheet correctly, and that I should have the outputs installed correctly. It seems that the gainswitches not increasing the gain is gonna be the only clue. As always, any help is appreciated!