For two seasons, my wind
instruments were intermittent. I tested and retested all the voltages at the junction box and the back of the meter. I reconnected all of the connections. After almost all "repairs," everything seemed to be fine. And then, on subsequent days, there would be nothing but dashes on the display.
I had the connection at the top of the mast
checked, the transducer checked, and as a desperate measure, I had the ST60 display replaced. Nothing fixed the problem.
So...the day before yesterday, after a discussion with a marine electronics
guy, I went and rebooted the C70 that is connected to the ST60 via a SeaTalk
cable. Guess what!!??? On reboot, the wind
instrument readings on the C70 AND
the ST60 came up fine.
So, here's my question: It seems to me that sometimes, when I throw the Instruments switch on the electrical
panel and both the C70 and ST60 come on line at once (meaning the C70 was left on), there is some sort of lag in the arrival of wind data to the C70. When that happens, it seems as if the C70 locks into "there is no wind data available" mode and simply won't allow either display to show wind readings, even when the wind data is fed to it afterwards.
Does this make any sense to anyone?