[TG] [TG11] Axiom 9 with Raypilot 650

[Tom - Raymarine - Moderator]

I'd guess you have a cracked solder joint in one of your Seatalk1 devices (RP650, course computer, anything else?) which is breaking contact from heat expansion after a period of operation, in turn then holding the ST1 bus voltage high or low and preventing other devices from communicating. This was something that ST1 devices before the ST60+ generation were prone to doing (ST60+ and contemporary should 'fail gracefully'.)

To find out which device is causing the problem, disconnect one when everything is cold, power on for 30 minutes or so and see if the network goes down - if not, you've found your device. It might be possible to spot and re-flow the problem solder joint but the problem is probably subtle and microscopic and realistically, it would be better to replace the problem device. Although the RP650 is (one of) the ones showing the symptom, it might or might not be the cause.

Tom