Join Date: Feb 2010
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Mike, to add to my previous, I did some testing test at my boat today, you may be aware of this but on my unit the NMEA LED only lights when data is being INPUT to the interface on the NMEA port. Under normal (for me) conditions, with incoming SeaTalk data being sent out the NMEA port, only the SeaTalk LED is lit.
If I send a single NMEA sentence to the unit, the NMEA LED lights for a few seconds, then goes out if no further NMEA data arrives.
So your LED indications could be normal, and the problem elsewhere, such as in the device which is supposed to receive the NMEA. Or might the polarity have been switched when the unit was swapped?
1998 Jeanneau SO45.2