I just built my first A12 and I'm cautiously testing. I hooked up the PSU and fired it up. No Smoke- good sign. I started testing voltages at U1 and I'm only getting +4 and -4v at pins 3 & 5 respectively. Is this within tolerance with pots R25 & R29 rotated fully counterclockwise?
Voltages at J1 are 45, 25 & -25v.
A12 chassis is not grounded to PSU chassis. Could this be it?
DOH! C4 was reversed! Time to bump up my reading glasses.