Lately every time I turn on my E120W, the heading vector is not correct to the boats course. I correct by "aligning heading" via GPS on my E12196. The course then is correct until I turn off the instruments. Am I correct that the instruments should be receiving power for the memory even when the circuit breakers are turned off thru the Seatalk system?
Welcome to the Raymarine Forum Andrew,
Please click
here to view a FAQ addressing this subject. As indicated therein, this symptom is indicative of a problem with the system's heading data source, which is most commonly the system's autopilot. Should you identify the make/model of marine electronics product which is supplying heading data to the system, then we may be able to advise you further concerning how this issue may be correct.