Join Date: Jun 2005
Location: Barnegat Bay, NJ
Thanked 65 Times in 60 Posts
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Had the same problem on two of my ST50 instruments last year. Raymarine tech support recommended turning up the brightness on the instruments, saying it might burn off the condensation (it didn't).
The depth died about two months later and the wind speed was starting to go. I ended up upgrading over the winter. YMMV.
95 Catalina 30 Island Time
“The sail, the play of its pulse so like our own lives: so thin and yet so full of life, so noiseless when it labors hardest, so noisy and impatient when least effective." - Henry David Thoreau