The 6000 has a control head
, a rudder
indicator, a fluxgate
compass and a drive unit that all connect to a course computer that also has the power transistors for the drive unit. If you have th book on it find the pictures.
You can do a little experiment
You need to find the fluxgate
compass. It is usually mounted forward and center in a small black box. This is where the compass heading comes from. What you see on the display is what comes from the computer. A fluxgate integrates through the four 90 degree quadrants and it is possible that it is busted. A 180 degree error makes me think it might be so I can help you prove it one way or another.
It is easy to test if you unmount it but do not disconnect it and using a crew member
manually rotate the compass as if the boat is turning slowly as you tell them how far and watch the display. This is easier to do in the slip than running the boat on the water
. You can start with it pointing as it sits in the slip and validate the 90 degree transitions both clockwise and counter-clockwise. If it can register the generally correct settings then you know it is not the compass. The compass should be held level as it is turned. This is SO much easier than motoring around in the boat.
Also examine to see you have not placed something made of steel
near this compass that didn't used to be there. Removing that object would be the best solution since it takes nothing to fix. Don't laugh it happens more than you think.
It is possible the course computer is in trouble and in that case you'll need a replacement and they are not inexpensive. You won't find an original but you can use a newer one if you contact Raymarine
with the model of the control head at the helm
. They can tell you which computers
go with that control head. They all use the same fluxgate and rudder
control and should alsp work the drive unit too.
Note that Raymarine
will not repair any components. They only replace them. I have a friend that can fix them but he isn't as healthy as he used to be. I did learn a bunch of his testing tricks that I can pass along. He fixed autopilots on both boats I've owned. There really are a lot of simple things you can do to determine what part of the auto pilot is NOT failing and so get to what is failing. The compass gone bad is most common and you can use a brand new one to replace it. The rudder indicator is another one that is easy to test if you have multimeter.
The computer is in two parts
. One half is where the wires all go to and is connected to the main unit via a 25 pin connector on each half. The soldering on the connectors can go bad or in my case the connectors can go bad. When the signals don't flow to the computer it won't work right. Start by testing the cheap
and easy to replace parts
first. Being lucky still counts.