Hi all,

So I've finally started building the tuner, and have reached the very first test. Well, I think it's failed, but I'm not sure... The values I'm getting for the regulators are 3.21V and 7.04V, which seem a little low to me. The caps are in the correct direction, I've checked for shorts and solder bridges, the power and ground wires are connected to the right holes. Just to make sure, I went back, and reformed connections. I'm stumped. When I check the voltage to the middle pins of the regulators, I get +12V.

Oh, when going through the checklist, a couple of the ICs had different numbers. I got KA258, rather than an LM258N, and a DS1489AN, rather than an MAX1489E. Are those interchangeable, or should I be giving pca a holler?

Thanks for any suggestions,