Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 26-12-2016, 09:55   #1
Registered User

Join Date: Aug 2015
Location: Port Townsend, WA
Boat: Tashiba-31
Posts: 288
Images: 1
ST4000 - circles to starboard

My boat came with a Raymarine ST4000 autopilot. I put the pilot into Auto mode and the boat then proceeds to turn hard to starboard. I've let it stay this way thru 2 complete circles.

I've tried a full reset to factory settings with no results. Now I'm trying to narrow the fault down to either the control unit or a sensor. Does anyone know of troubleshooting steps for that?
__________________

dmksails is offline   Reply With Quote
Old 26-12-2016, 10:07   #2
Senior Cruiser
 
senormechanico's Avatar

Cruisers Forum Supporter

Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 6,738
Re: ST4000 - circles to starboard

A very likely result of loose connections on the FET driver transistors (four of them) in the control head.
Each transistor has three leads. On mine, there were 8 bad connections out of 12 possible.
If you aren't great at soldering, leave it to someone who is.
__________________

__________________
One should try to "Die Young" as old as possible.
senormechanico is offline   Reply With Quote
Old 26-12-2016, 10:08   #3
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 8,177
Re: ST4000 - circles to starboard

I could be the wires to the pump motor have been reversed.
DeepFrz is offline   Reply With Quote
Old 26-12-2016, 10:24   #4
Registered User

Join Date: Aug 2015
Location: Port Townsend, WA
Boat: Tashiba-31
Posts: 288
Images: 1
Re: ST4000 - circles to starboard

Thanks for the pointer to check the circuit boards.

My first job was creating test programs for the circuit boards use in sonar systems - I should have thought of that!
dmksails is offline   Reply With Quote
Old 27-12-2016, 08:10   #5
Registered User

Join Date: May 2016
Posts: 1
Re: ST4000 - circles to starboard

inversion on drive electric feed
check polarity
Sylvaingagne is offline   Reply With Quote
Old 27-12-2016, 08:27   #6
Registered User

Join Date: Jun 2015
Location: Houston
Boat: Beneteau Cyclades 51.4
Posts: 257
Images: 2
Re: ST4000 - circles to starboard

If everything connection wise checks out ok then try the obvious tell the controller which side of the boat you mounted it if its backwards youll be doing willies out there.
sailon46 is offline   Reply With Quote
Old 27-12-2016, 08:46   #7
Registered User

Join Date: Aug 2011
Location: Northern California
Boat: Norseman 447 AC
Posts: 9
Re: ST4000 - circles to starboard

check for magnetic interference near the control unit. In my case cockpit speaker magnets were the culprit. I removed the speakers and problem solved
compdoc is offline   Reply With Quote
Old 27-12-2016, 08:52   #8
Registered User
 
svfinlandia's Avatar

Join Date: Jul 2012
Location: Wherever my boat is
Boat: Nauticat NC36 36'
Posts: 314
Re: ST4000 - circles to starboard

I upgraded my chart plotter from a C90W to a e97. The auto pilot work perfectly on the C90W but once e97 was installed and I would either initiate the track or a goto the boat with immediately Veer to the right for a while then back to the left for a while, then finally find the correct route and would be fine from there. So far I am living with it since there's lots of room ion the ocean but I am careful not to set a track or go to on the ICW.

Al, S/V Finlandia
__________________
quo fata ferunt
svfinlandia is offline   Reply With Quote
Old 27-12-2016, 10:21   #9
Registered User

Join Date: Jun 2012
Location: argyle, nova scotia
Boat: 30 feet sailboat, 1991
Posts: 33
Re: ST4000 - circles to starboard

had similar thing on my ST4000 tiller pilot. Would happen usually after being fine for hours. Eventually I found the screen was not grounded. I fixed this and it's been ok ever since
__________________

peter loveridge is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rookie questions - boundary circles; exporting options; GPX files fredgmeyer OpenCPN 5 23-05-2014 22:22
New Autohelm ST4000 verses old ST4000 landonshaw Construction, Maintenance & Refit 5 11-01-2013 09:07
Bonding Starboard Sunspot Baby Construction, Maintenance & Refit 12 19-04-2009 03:41
Icebergs off the Starboard quarter Alan Wheeler Cruising News & Events 36 27-11-2006 19:20
Ice bergs off the starboard Alan Wheeler General Sailing Forum 1 20-01-2005 14:43



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 00:41.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.