Garmin Fishfinder/Lund Boat Troubles

I am struggling with trying to get my Garmin 240 Fishfinder to consistantly
read the depth. I am getting a very inconsistant reading. Even when I'm
getting a reading it's only a very narrow black line that indicates the bottom.
The line will start to get smaller and smaller eventually fading out with the
depth reading blinking. I have moved this thing all over the back of the
transom; left, right, up and down with no change in the results.

Has any one else had this problem. How did you solve it? Thanks so much in
advance!

My Garmin only produces blinking numbers when I'm at higher speeds. Because
of the design of my Lund (WC-14, one of the very basic models), there was
simply no place to mount the transducer in a way that avoided all
turbulence. I take a practical view, though. If I'm really concerned about
running aground, I should be going slower and looking at the chart. If I'm
hunting for fishing structure, I just slow down a bit.

At what speeds are you experiencing problems?

"KDSorenson" wrote in message

 > I am struggling with trying to get my Garmin 240 Fishfinder to
consistantly
 > read the depth. I am getting a very inconsistant reading. Even when I'm
 > getting a reading it's only a very narrow black line that indicates the
bottom.
 > The line will start to get smaller and smaller eventually fading out with
the
 > depth reading blinking. I have moved this thing all over the back of the
 > transom; left, right, up and down with no change in the results.
 >
 > Has any one else had this problem. How did you solve it? Thanks so much
in
 > advance!