SPX 30 Drive Stop Issue

[SVNeko]

I have an unfortunate update on this Drive Stop issue. Believing the source of the problem to be a faulty drive pump, we replaced the pump at great cost. It has not solved the Drive Stop fault. Subsequently, we have met in our travels two other boats suffering the exact same problem with an X30. One has a Lewmar Mamba drive and the other a Raymarine hydraulic drive. So we have three X30's all with different drives and all suffering the same problem. Unfortunately, this X30 was serviced by Raymarine 1.5 years ago and a very experienced Raymarine agent in Martinique recently, neither of which found a reason for this problem. Due to its intermittent nature I believe it is very difficult to diagnose but I am now convinced it is some kind of fault with the computer.