You really need a scope to see the VCC circuit for the Hall sensors because it is a 125Hz signal, not DC. Same goes for the Output of the Hall, need a scope to see it and if it's working correctly.
U9 supplies the power to the Hall sensors. Make sure that R38 - 0ohm and R40 - 100k are still there and correct values.
U9
1 - 125Hz Out, to Hall VCC
2 - GND
3 - 125Hz In, from MCU
4 - 3.3v