I posted a few days ago about my intermittently operating GPS. A tour of older USA threads shows that there is a history of these units failing - apparently a bad batch were produced a few years ago, unclear when. Also is that they have a lithium battery in them similar to that on a PC board and it is unclear if these pack up after a while and might be the source of the problem. Has anyone here opened up their aerial and replaced the battery - is it easy to do, did it make a difference?
BTW, Hardy and Raymarine both recommended an upgrade to a 125 unit which is fine if you want to spend a couple of hundred quid on something that should work already!