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First of all - is the boat compass correct? How does it align with COG? Secondly, do you have a magnetic field that interfere with the fluxgate? To test for this you can use the compass on your smartphone or a handheld compass, move about in the boat and keep the phone/compass aligned with the keel. If the heading drifts in the area where you have your fluxgate today, move it.
Hi Alchik. Lightning hits can affect all and everything, Murphies Law says that until you have replaced all control electronics, the fault will continue to pester you. Is there any part of the system that has not yet been replaced? Because that is probably going to be the course you have to set for yourself. I loath acts of God when it comes to electronics.
Check out the battery. The clock will work with a low battery, but other things may not. Also, the batteries that are in it may have corroded contacts...clean them off first!
I suggest you sell that before you have serious problems and no one will buy it. Yeah, that's what I would do... after all the two best days of a boat owner experience are the day you buy it... and the day you get rid of the money pit.
Compass Calibration Before calibrating the compass, drive the vehicle to an area that is magnetically clean or free of large metallic objects. Verify there are no magnetized objects on the inside or outside of the vehicle close to the mirror.
Start the engine. Press and hold the switch for the compass, which may be depicted as COMP, COMPASS, or On/Off (w/UE1) depending on the type of mirror on the vehicle, until the letter "C" or "CAL" is displayed. Drive the vehicle in circles at a speed of less than 8 km/h (5 mph) until the "C" or "CAL" is replaced by a proper vehicle heading. The calibration procedure is now complete. Compass Magnetic Variation Adjustment Magnetic variation adjustments are required when the compass displays a constant error in heading. Variation is the difference between magnetic north and true north due to geographical location.
Compass Calibration Before calibrating the compass, drive the vehicle to an area that is magnetically clean or free of large metallic objects. Verify there are no magnetized objects on the inside or outside of the vehicle close to the mirror.
Start the engine. Press and hold the switch for the compass, which may be depicted as COMP, COMPASS, or On/Off (w/UE1) depending on the type of mirror on the vehicle, until the letter "C" or "CAL" is displayed. Drive the vehicle in circles at a speed of less than 8 km/h (5 mph) until the "C" or "CAL" is replaced by a proper vehicle heading. The calibration procedure is now complete. Compass Magnetic Variation Adjustment Magnetic variation adjustments are required when the compass displays a constant error in heading. Variation is the difference between magnetic north and true north due to geographical location.
The "OC" indicates your compass is "Out of Calibration". Below is the proceedure to recalibrate your compass.
Compass Calibration
The compass may need calibration if:
After five seconds, the display does not show a
compass heading (N for North, for example), there
may be a strong magnetic field interfering with the
compass. Such interference may be caused by a
magnetic antenna mount, magnetic note pad holder
or a similar magnetic item.
The compass does not display the correct heading
and the compass zone variance is set correctly.
In order to calibrate, the letters CAL must be displayed
in the mirror compass windows. If CAL is not
displayed, push in the COMP button for approximately
eight seconds or until the letters CAL are displayed.
The compass can be calibrated in one of two ways:
Drive the vehicle in circles at 5 mph (8 km/h) or less
until the display reads a direction, or
drive the vehicle on your everyday routine and after
several turns the compass will become calibrated and
will display a direction.
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