Here are some solutions that have helped many of our customers.
Losing Depth When the Boat is Moving
This is likely due to turbulence in the water surrounding the transducer. You may need to move the transducer lower in the water or to another location. The transducer cannot send or receive signals through air bubbles.
Losing Depth in Shallow Water
It can be difficult for a high-powered unit to capture the lightning-fast return in shallow water. Turn off the automatic sensitivity setting and manually reduce the sensitivity until the unit locks onto the bottom.
Losing bottom over weeds
When trolling over weed beds in 20ft of water or less, you may experience vertical bars, loss of the chart picture, or the digital depth. First, do a soft reset of the unit. Click here to find the reset procedure for your unit. Then go to the Full Sonar Chart screen. Press Menu and select Sonar Features. Now turn the Chart Manual Mode to On. This will leave everything in Automatic Mode except the depth. Now go back to the main menu and set the depth range for the depth you are in such as 0-20 feet.
Losing Depth When Another Sonar Unit is On
If two or more sonar units using the same transducer frequency are operating at the same time, one or more of them may lose the depth reading due to interference. It is like two radio stations trying to both broadcast on 97.3FM. In shallow water, if the transducers are far enough apart, you may be able to operate them together. However, the deeper the water, the wider the beams spread out. When they cross each other, the interference occurs.
No Depth Reading at Any Time
Clean the bottom of the transducer. Make sure the beam is shooting down (see picture below). Check your transducer connection to the back of the unit. Check the connector pins for corrosion. Check the cable for frayed or pinched areas.
Phone a Friend
If a friend has the same transducer and power connection on their boat, try your unit on their cables. If your unit works on the other boat, you transducer may need to be replaced.
If you have reviewed the troubleshooting information above and still believe that you need additional assistance, please choose one of the following options:
If you need to speak with a Customer Service agent, please call our toll-free Customer Service line at 1-800-324-1356. Technicians and representatives are available to help you Monday through Friday from 8 a.m. to 5 p.m. CST, except holidays.