ST1000+/ST600R troubleshooting

[wesdjohn]

My ST600R has an error that states "no line". The unit is probably 6-7 years old. The remote powers up fine. I assume the data feed from the tiller is the problem. The St1000 tiller unit is working fine. It is a simple system (tiller unit and remote directly connected with the "three pin" socket).

I checked all mechanical connections and cleaned up a few - still no luck. How do I troubleshoot this? Is there a way for me to check if the tiller unit is putting out the proper signal (from the #4 pin position)? I assume it's an analog signal, is it just a voltage measurement?

If I determine the remote is dead, can I upgrade to the S100 for this simple system or do I need to go through my instruments (new i70, i60)/seatalk network with the S100?

Thanks in advance,
Wes J.
Maine