For the second sensor, I think the dual op-amp IC has also failed.
The op-amp output at pin 7 is not coming up. I think it should, as (+) input 1.1V and (-) input 0.8V, so I think the IC is bad or there is a short on the output line, if it's connected to the main board. Also the second section (+) input pin 3 0.5V and (-) input pin 2 0.75V, and output 0.75V so not working as a voltage follower. Pin 3 and 2 should be very close to the same voltage if that op-amp is working.
I'd cut all the IC's pins to get it out and then use a soldering iron to wipe off the remaining leads and clean up the pads.