[peterb]

Last year I bought the below 23'boat that came equipped with a Raymarine monchrome FF and a thru hull transducer. I wanted to replace the FF with a color unit and keep the thru hull ducer.

Between Airmar and Jim at BOE Marine I was able to determine that I could get a Rarmarine DS600X to work with a special cable adapter. I got the unit setup last spring.

Between the spring and summer of 2007 it worked great at all depths.

Starting in the late summer it only worked when I was in 10 feet of water or more (plus I could not be moving too quickly).

I had a local marina with a good reputation check look at it in Feb 2008. They said that there was crud on the bottom of the ducer. They cleaned it up and then put protective paint on it.

I first tried it out this past Thursday. At first it did not see the bottom at all. After about a half hour in the water it satrted to work (only in 10 feet of water or more). I tried it again this morning. Halfway through the day it stopped working (in that it could not read the bottom, but the temp feature worked). I was bummed.

Any ideas. Do you think that it is the ducer, the DS600x or a power voltage issue?

I will bring my volt meter down to the boat. Also, I will call Rayamine (to get their take). Lastly, I am thinking of getting an Airmar P66 ducer to see if it is the ducer.

Your input would be greatly appreciated.

Thanks for reading.

Peter