I've got an "old" auto pilot on my Hardin sea wolf, its a Raymarine
ST 6000+ with a type 300 brain. I recently bought a second hand but working control head
as the old one looked suspect, the screen
was burned out and it had a message ST Fail. When I installed the "new" unit it displayed a picture of the rudder
indicator which the old one never did, but still said Sea Talk Fail.
So I found a re-furbished computer on ebay and installed that thinking I would finally get the AP working.
When I connected it all back up, which is not too difficult as all the wires are marked and coloured, I switched it on
The manual says I should hear a beep from the control head
but mine was silent and instead of a two second display saying it's an ST 6000 and going to standby it just kept flashing st 6000 in rapid succession. Thats all it will do.
I've checked all the voltages on the Type 300 computer terminals and they are exactly what the service
manual say they should be 12v on the seatalk
to the control unit, 5v on the rudder
, 2.5 to the fluxgate
I've checked the resistances on the fluxgate compass
and the rudder control unit and they all comply with the service
I dug out the old ST6000 head, as an experiment
and plugged that up to the seatalk
line and hey presto IT BEEPS but then after a brief stop on standby it displays saetalk fail, but it did beep. The "new" one does not beep and as I said just flashes ST6000. I'm puzzled, well darn right frustrated, not only cause I paid $500 for the "new" unit but when I first replaced it it looked like the picture in the book, except for the sea talk fail message that was on the old unit
Has anybody seen this flashing message, is there some magic combination of reset buttons, that will put it into standby.
Could it be too low voltage, as I did have a low battery
situation when I fitted the new brain,but I've since got the batteries up to speed. I am an electrician, retired, and should be able to solve this but it's got me well and truly foxed.
I've doused the control unit with switch cleaner, and checked to voltage at the control head 12.39
Any suggestions anybody!!!