Humminbird 565 Problems

F

Fullspectrum

Seaman Apprentice
Joined
Feb 11, 2008
Messages
45
When I'm running the motor at lower speeds, the image on the screen appears fine.

When I'm running the motor at higher or full speed...the image on the sonar gets all screwed up. Depth ranges jumps around...screen gets cluttered up...and then freezes.

I have to turn the unit off and drop the speed down for it to read normal.

What's the problem?!
 
Silvertip

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,762
Re: Humminbird 565 Problems

The transducer is mounted in a way that turbulence is being formed around the transducer at speed. Check the mounting height, and make sure its not in line witha row of rivets (aluminum hull) or in line with a strake or other protrusion on the hull. The transducer needs to run in undisturbed water. It may also be kicking up at speed so make sure its mounted correctly.
 
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