Originally Posted by al40
It appears that the console on my RC is humid inside. A couple of the guages and my Icom M421 have started to fog up very slightly.
Yep, got the same problem with my Mercury smartguages, fuel gauge and M421. Spoke to the dealer about the smartguages and fuel guage, and was informed that "they all do that". Went to the trouble of taking the Icom out of the console (pig of a job!), and sending it back to Icom, who said that there was nothing wrong with it. The slight fogging that I was seeing was due to the water vapour in the air contained within the sealed volume of the case. It did, and continues, to work perfectly, and the fogging clears when it has been out in the sun for a bit. The boat is kept under a heavy tarpaulin cover, but it does not seem excessively damp under the cover.