I’m hoping that someone might be able to shed some light on what seems to be multiple failures/problems with our Raymarine Autohelm
; contacting my ‘local’ Raymarine
Specialist is not an option as we’re in the boondocks of Fiji
To begin: We have a very basic 12Vsystem with an ST6000 Control unit, fluxgate compass
reference unit and linear drive
, all coming together via a type100 computer, no bells or whistles. The unit’s not heavily used as we’ve a windvane self steering
unit as first choice but three days ago it working fine and yesterday when we powered it up it was ‘dead’; in between the boat
hadn’t moved and we can think of no maintenance
job we did which could have possibly had any effect on the systems components.
With a ‘dead’ system I began by checking the supply from the power switch to the computer and found a blown fuse in the computer – result!
Sadly not, even when the fuse was replaced there was power going into the computer’s cable bar, power also at the ‘Seatalk’ terminals, but still none reaching the ST6000 controller? Using a new cable to connect the Computer’s Seatalk
terminals to the ST6000 Controller this problem too was overcome, though whilst the cable I used was a similarly sized 2-wire & copper screening cable, I suspect that it’s not a ‘genuine’ Raymarine cable as one wire is blue whereas the Raymarine one’s yellow; are the units ‘picky’ about this cable?.
So, we got power to the Controller but found it was still ‘dead’, never mind, we had a spare controller that another yacht gave us a year or two ago – no idea of it’s history
– and wired that one in instead; it wasn’t ‘dead’ but no better; this one still didn’t light up, but it did give out a continuous squeal/buzz when powered up; bugger! Still not defeated, we had a third unit which we switched out a few years ago – it was working OK then other than the ‘standby’ button had failed, so the only way to stop the autohelm
operating was to turn off the power This one did light-up and said ‘ST6000’, but only for about five seconds whereafter it beeped and changed to ‘ST Fail’, We’ve disconnected/reconnected all the wiring
several times but can’t get anything else out of it; if you leave it alone it re-beeps every minute or so, but simply to say ‘ST6000’ for a few seconds, before returning to ‘ST Fail’
Looking around the internet
searching ‘ST Fail Message’ I saw comments suggesting that: If the controller’s buttons ‘beep’ then it’s a computer/wiring problem, if they don’t ‘beep’ it’s a controller problem? Not really conclusive for me as the ‘Auto’ button beeps, though the rest are silent?
So whilst standing idle for a few days we seem to have suffered a blown fuse, a failed computer to controller cable and the controller itself has died; any suggestions as to where/what I can try next, or even just a suggestion as to what could’ve caused this catalogue of problems?