ST1000+/ST600R troubleshooting

[wesdjohn]

Ok, thanks for the SeaTalk tutorial (some of which I followed).

So, back to the original problem - the ST600R remote is not showing the ST1000 course computer heading on the LCD display - how do I troubleshoot this? Is there a way to check if the yellow (pin 4) from the ST1000 is outputting the correct data?

I suspect the remote is broken, but before I replace it, I'd like to make sure the ST1000 is still OK. If not, then I have to repair or replace the entire system.....

-Wes J