Ok ; so system operates normally , but one led on the control panel isn't functioning to indicate jack down .
I'll read through the 725 manual I have , but first thought would, be either the leveler sensor or the led could be the issue .
I'm thinking that disconnecting the sensor and jumping the wires , if the led lights up ; the sensor is bad ; if not it's the led . BUT don't attempt till I confirm my thoughts or AZ Pete checks in with the exact info.
EDIT : I see John posted while I was typing . Boy I type slow .