Originally Posted by ramblinrod
If the units ever worked, it is not likely the software that is preventing them from working now.
The OP does not say what constitutes "not working" but I agree with others that a software bug is unlikely to prevent the thing powering on. Presumably also if you got hold of the software you'd need a way to write it to cmap cartridges?
If I desperately wanted the latest software I'd probably ask a local long-established raymarine dealer if they had a cartridge with it tucked away somewhere but it's probably better trying to sort out the real problem.
The "you need to replace your electronics every N years" thing is not one I concur with. Whilst I understand that, for example, non-solid aluminum
electrolytic capacitors have a service
life, the components used in a given product, the consequences of degradation of those components, how long and at what temperatures the product has been used by previous owners etc. is going to be opaque to most of us. A blanket "replace your electronics after N years" is just throwing money
away. I have 29-year-old ST50 instruments connected via a converter to my n2k network and they work. 3 years ago I replaced my similar vintage Autohelm
course computer because I *thought* the components had failed. When fitting a new unit I realised there was a corroded connector in the wiring
path which looked fine voltage-wise when not under load but not so much when trying to deliver more than standby current
Whilst electronics failing at some times are more inconvenient than others, if anyone can't get home without a particular piece of electronics I'll suggest that they're doing it wrong. Old kit can fail at any time. So can new stuff.