Originally Posted by lazydove
I am on an island - limited help available. I have a Simrad autopilot
AP 16, with AC 20 and hydraulic linear drive
Display starts up, correct compass
, I get rudder
information but that is it.
To ask Simrad is pointless - have tried before.
Where do I best start to debug?
Assuming you have already checked and confirmed the fuses
on the computer are good, start with the connector on the back of the control head
. Ensure that the pins are clean. Hopefully you have some electrical
contact cleaner but you can use 90% alcohol on a Q-Tip/Cotton swab also (just ensure the alcohol has completely evaporated before reinstalling the plug
.) The typical control head
has two plug
positions that are the same and if, after cleaning
the pins, the first connector doesn't seem to work
, try the second plug position. If neither of those solves the problem move on to the junction block at the computer and try cleaning
the plugs there as well. Also, pull the power lines from the HLD and ensure they are clean and dry. Usually the foregoing is all it takes to get the system back up. If not, you may have a failure of the power connectors on the mother-board; or, one of the power transistors may have given up the ghost (hopefully not!). In either case, the computer will need to go to a qualified shop for testing and hopefully repair.