FISH HAWK TROUBLESHOOTING SCENARIOS |
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Problem |
Possible Cause |
Possible Solutions |
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No probe data appears on the display |
No probe power |
Inspect AA batteries and battery pack. Battery pack connector should be adhered to the inside of the probe. Double check proper battery polarity of all four batteries. |
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Probe is out of the water |
The probe only transmits when in the water |
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The transducer is not mounted or positioned correctly |
Locate the transducer in a spot on the transom where prop wash is minimal. Do not locate the transducer near a kicker motor or lower unit. The transducer should be parallel with the surface of the water at the bottom of the hull. |
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The GAIN adjustment is too low |
The default GAIN setting is 15. Increase the GAIN in deep water, rough water, when tolling faster, or when using downrigger weights less than 12lbs. |
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The sending unit inside the probe has failed |
View this video to determine if the sending unit is working, or try your probe on another boat with a Fish Hawk or vice versa. Unfortunately, there is no way to repair the sending unit, the probe must be replaced. Please complete the Service Request Form |
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Probe is upside down |
Probe should be attached so the paddle wheel is on the bottom |
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Probe is too close to the boat |
Probe should be at least 5-feet under the transducer |
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The probe temperature shows approximately 3.8° |
Probe temperature sensors have been damaged |
Unfortunately, there is no way to repair the damage, the probe must be replaced. Please complete the Service Request Form |
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Probe readings on the display are erratic or intermittent |
Sonar interference |
Turn off fish finder to verify, then set your fish finder to run at 200 kHz rather than 50 kHz or 83 kHz. Separate transducers on the transom if practical. |
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The transducer is not mounted or positioned correctly |
Locate the transducer in a spot on the transom where prop wash is minimal. Do not locate the transducer near a kicker motor or lower unit. The transducer should be parallel with the surface of the water at the bottom of the hull. |
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The GAIN adjustment is too low |
The default GAIN setting is 15. Increase the GAIN in deep water, rough water, when tolling faster, or when using downrigger weights less than 12lbs. |
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Probe speed seems unrealistic |
Calibration offsets have been over adjusted video |
Return display to factory zero settings |
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Surface speed not accurate |
Transducer location |
The Fish Hawk display typically shows faster surface speed than SOG. It can be calibrated, but most anglers simply rely on GPS SOG for surface speed. By design, the Fish Hawk display won't show speeds faster than 11 MPH accurately. |
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Display won't turn on |
The 1-amp in-line fuse is broken |
Replace the 1-amp fuse found near the end of the power cord |
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The display buttons do not respond |
Membrane switch has failed |
Replace membrane switch. Please complete the Service Request Form |
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Display backlight flashes continually |
Membrane switch has failed |
Replace membrane switch panel. Please complete the Service Request Form |
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The GAIN value is scrolling without pressing an arrow key |
Membrane switch has failed |
Replace membrane switch panel. Please complete the Service Request Form |
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The Fish Hawk Display turns off when the outboard is running |
Electrical interference from mid-range Mercury outboard motor produced between 1990 and 2002 |
Replace the standard spark plugs with suppressor (resistor) spark plugs Spark Plug Reference Chart |
