I have a IC 40 salt cell generator with no lights on it. I have already replaced the circuit board and the small 20 amp breaker that goes with it and it’s still tripping the breaker when I turn the main breaker back onto the salt cell. I have looked at many YouTube videos and manuals and cannot find where a fuse may be that I can replace. I do not have a separate box for the salt cell. Circuit board and transformer everything is Pinar box