Had our Salt pool since about 2008 or 9. Second time replacing the circuit board. Recently it would not kick the pump on. Multimeter seemed to indicate the board was dead. Not a real surprise as we have had a lot of storms, pwr outages and brown outs. Replaced it, a few weeks later the read out said high salt. Checked the water and it was super salty with almost no chlorine. Salt cell looked ok but cleaned it anyway, checked all the connections in the control box and the power level coming from the outlet. Turned it to super chlorination and but there was not power going to the salt cell. Ran through the diagnostics on the display but there was no display for the salt cell. Looked on this blog and saw information about the J4 jumper. The jumper was not connected. We have always had a T15 cell and looking at the last circuit board, the J4 was not connected on it either and it seemed to work for years. The salt cell is 2 or 3 yrs old and I am not convinced that the cell is the issue as there is no power going to it. However, if the control panel is not seeing the cell then I am willing to solder the J4 if I need to but the T15 worked before with the J4 open. Thanks