Unfortunately... you are correct. they aren't really repairable but... if you recently purchased these, like in the last year or so... the mfg may take a look at it and replace it for you. It never hurts to ask. After all... they can't really afford the "bad publicity" among cruisers which account for a significant portion of their marine
business. I'd check with a local dealer first... ask some good questions, then take the offending unit in for a checkup. They could be your best friend when dealing with the factory.
If that fails, there's always the internet
and you can find the customer service
person to help you. Maybe at the very least you'll get a pro-rated discount on the purchase
of the replacment unit.
Sorry the damn thing quit you. Better at the dock
than 300 miles out.
Hey: Here's a test you can do. Get that thing in direct sunlight like it is when it fails and throw some water
on the panel to chill it to keep it cool and see ifit still does that. If it quits, then you're on to the logical reason for it's failure... thermally related expansion and probably trace breakage.