None the less the 3046 has now been removed and I'm pleased to report that two of the five transistors are definitely bad.
OK I'm a little late with this, but I'll post it for completeness.
Meter input remains at 1.00Vrms, at 200Hz. The 8050A display reads 1.0007. Scope settings remain the same. I found my non-battery option 8050A and switched to it so the probing is easier.
Pin 1 of the 473777 is the module output at 1.069 Vdc. The output of the other opamp on this chip is -1.805 Vdc. All the inputs are very near 0V, with no AC signals present. The -5V supply is -4.98V and the +6V supply is at 6.24V.
The transistor array pins have interesting signals which I've captured. I'll call it U3. Pins 6, 8, 9, and 11 are at 0 Vdc. Pins 2 and 9 are both at -0.657 Vdc. Pins 4, 5, and 7 are all the same signal.
I think it's safe to say the circuit does not follow the block diagram exactly. The input goes into the LF351 where it looks like the log(Vi) is done. The CA3140E apparently then does the absolute value. There's still an antilog and summation happening somewhere, but I don't know where exactly.
Hopefully the dead transistors will be your only problem...