I experienced this situation with my ST6000+, T300 Course Computer and Type 2 linear drive
unit in 2005, while in the Med.
In my case the problem was fixed by throwing money
at the problem. I initially checked all electrical
connections, and found everything solid with no corrosion
. Then on the recommendation of a Raymarine
Tech in Gib, I replaced the drive motor
. The reasoning was that the course computer was dropping into standby because of an overload condition from the drive unit. That seemed to work for a few days, but then the problem came back. The Gib Tech had said that if the drive motor
didn't fix the problem then the problem must be in the course computer. By then I was in Spain
and I was given 3 choices by the Raymarine dealer in Almerimar:
- Send the course computer back to Raymarine for diagnosis and repair with a turn around of at least a month with no guarantee of a fix.
- Order a replacement course computer as a part from Raymarine at a significant cost with a turn around of 2-3 weeks
- Order a complete S3 core package through the dealer at about 25% more than the cost of the part and a turn around of 48 hours.
I chose option 3 and now have a spare fluxgate compass
sensor. The good news is it finally fixed the problem and 8 years later the AP is still running fine. Of course the bad news was the cost, about E1,000 IRC.
In my case I think the problem was caused by a poor SSB installation
on my part. The power cord and antenna
cable for the SSB
ran within 1' of the course computer. I had re-installed the SSB the previous winter, which moved the cables
to more than 4' from the computer, but I think the damage was already done. The AP failed on the initial leg of the trip from Portugal
to Gib the next spring.
I'm sure my solution is not the one you want to hear, so I would definitely check all of the electrical
connection before contacting Raymarine.