Having a problem with our GE 7EA Mark V QTBQ. Device 39V-3A Vib sensor is alarming -.8 when the unit comes up to speed and stays in alarm. Changed out the accelerometer and swapped cables, no change. Does anyone know what I must do to change out the QTBQ with R,S,T redundancy? Don't want to power all 3 processors down. Is there a right way? Thanks.