Originally Posted by oneman
In the process he sprayed over the transponder which is located underneath the hull with a couple of coats of primer.
What I'm wondering now is whether this coat of primer over the transponder will affect the operation of the depth sounder or whether I should try to clean it off with some thinner. Or am I likely to cause more damage by doing that?
Any advice would be greatly appreciated.
Depending what was in the primer ie.. if it contained metal like iron oxide or zinc chromate, this could effect readings by the sounding signals being reflected before they get out. If there was NO metal in the primer, leave it on - many transducers inside composite hulls operate fine right through the hull without being inserted in a through-hull.
Therefore if the primer did have metal in it - clean it off - suggest not with thinners as the face of the transducer may be plastic. Use Brasso or some other metal polisher.