With the AD847JN out it seems this might be the issue. While power consumption of the amp is normal (5.5ma) The amp will not work as a normal op amp. The output is not following the input and there is a 1.2V difference between the input + and input -. Maybe input stage is broken ( when setup at unity gain) To test i put the amp in a socket with bypass caps on socket. Amp configured in voltage follower mode with gain on +1. Supply was +/-10V and applied zero volts to positive input. Output was 1.2V and same difference on - Input pin.