How to Repair an Eagle Supra I.D. Fish Finder

The Eagle Supra ID is an electronic fish finder that is mounted on either the bow or transom of a boat. The Eagle Supra uses sonar technology to identify objects and fish in the water. The fish finder is comprised of three main pieces -- the monitor, the power cable and the transducer cable. When problems arise with the fish finder, they are commonly found in one of those two wires or the fuse.

Things You'll Need

  • Replacement power cord
  • Crescent wrench
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Instructions

    • 1

      Check the power cable first. Run your finger up and down the cord and feel for breaks or rips. If it damaged, replace it with a new cord. To do this, unplug one end of the cable from the fish finder monitor. Loosen the negative and positive battery cables from the boat battery with the crescent wrench and remove the power cord ends from the battery terminals. Connect the new power cord's positive end to the positive battery post and connect the negative end to the negative battery post. Once attached replace the positive and negative battery cables with the wrench.

    • 2

      Unplug the power cord from the monitor and then plug it back in. Also check to make sure the red lead is connected to the positive terminal on the battery and that the black power cord lead is connected to the negative battery post.

    • 3

      Disconnect the power cord leads from the battery with a crescent wrench. Twist and open the fuse holder that is built into the line. Remove the fuse and replace it if it appears blown. It is a 3-amp fuse.

    • 4

      Inspect the transducer cable for breaks or nicks. The transducer is the component that sends electronic pulses that bounce back when an underwater object is identified. If the transducer cable is damaged, replace it with a new cable. Engine noise can also affect the transducer cable or make it run erratically. If necessary, remove the transducer cable from its plastic mount, use a screwdriver to remove the mounting hardware and relocate it to an area away from the motor and not near any other electrical wiring on the boat.

    • 5

      Wipe the transducer down well with a rag, and make sure it is pointing downward when it is in its mounted position.