Eros troubleshooting new build with low gain [resolved]

[arri]

Just finished a new Eros I'm building for a friend. Everything seemed like it was checking out (with some exceptions noted below) but when I replaced my old faithful Seduction with the Eros to feed a Crack amp from a Goldring G012 moving magnet cartridge the gain just wasn't there and what little sound there was had a kind of distortion. On the other hand, with no vinyl spinning, the noise floor was extremely low

Voltages:

Terminal A   B
Kreg 4.1 4.6
breg 136 140
OA  142 145
IA  223 223
bA  0  0
OB  137 140

Resistance Check (only listing where things were potentially out of bounds and all of the C socket):

TS  Read Target
T2  85k  71k
T4  75k  60k
T9  47k  39k
T10  47k  39k
T12  75k  60k
T14  86k  71k
     
A4  620Ω *
A6  75k  60k
     
B4  620Ω *
B6  75k  60k
     
C1  47k  39k
C2  75k  60k
C3  falling  *
C4  620Ω  inf
C6  47k  39k
C7  75k  60k
C8  falling  *
C9  0    0

The Kreg, breg, OA and OB all seem high but I can't figure out why. The power supply voltages all measured correctly. All of the LED's are lit although it takes a few seconds for the shunt regulator board to light up. Any electrolytics are facing the correct direction. I have gone back over everything and am not seeing anything glaring; frankly, I was pretty pleased with the quality of my assembly and soldering.

Any suggestions or requests for more info?

arri

 

[arri]

Looking over the C4S's again (for the n'th time) I think I located the problem. I installed the 2N2222A transistors on the A side instead of the B side of the board on both. Amazing because I deliberately told myself to (and did) build each board separately following the instructions each time so that I wouldn't replicate any mistakes. And yet I still apparently read it wrong both times!

Now to move the little bastards.

arri

 

[arri]

Yup. That was it, Kreg came down to 1.8v. OA up to 164, and OB down to 96v. And now they sound good too!

 

[Doc B]

Good job sorting it! This is one of those cases that explains why we suggest posting photos in these queries. More eyes on can usually spot misplaced parts pretty quickly.