I seem to be having display problems. What do you recommend?
Fogging
Although your Humminbird depth sounder is waterproof, the air within the unit contains moisture due to natural humidity. Please use the following suggestions to troubleshoot the problem.
Check the Unit
Although your Humminbird depth sounder is waterproof, the air within the unit contains moisture due to natural humidity. Due to this, some fogging is normal on cooler days. This situation is caused by heat generated from the sun warming the air in the depth sounder. This situation can be avoided or reduced by storing in a protected and safe area at outside temperatures. The situation should clear after about one hour of use. If not, the unit should be sent in for service.
Has Power but No Display
Consult the Common Checks guide on the following link and make sure that all categories are fully verified. Common checks
Adjust Angle
Tilt and pivot the depth sounder so that you may easily maintain a good angle for viewing.
Adjust Contrast
If contrast adjustment is an option on your depth sounder, refer to your Operations Manual for instruction.
Check the Connectors & Pins
Check the power connector, depth sounder connectors, fuse, fuse holder and battery terminal connections for corrosion. If corrosion is present, clean it off by using an abrasive (sandpaper, battery terminal cleaner, etc.) or with a mixture of baking soda and water. Also, make sure that all connections are not loose. Corrosion may cause a loss of voltage to the depth sounder.
Display Freezes or Stops Moving
Consult the Common Checks guide on the following link. Common checks
Customer Resource Center
If you are still having problems after trying the preceding suggestions, return your depth sounder along with the power cable, transducer(s) and any accessories (switches, temp, speed, etc.) and a letter with a detailed description of your problems to:
Johnson Outdoors Marine Electronics
Service Department
678 Humminbird Lane
Eufaula, AL 36027
(800) 633-1468 Customer Resource Center
email: service@humminbird.com