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MAINTENANCE AND WARRANTY
TROUBLESHOOTING
5. The unit comes on before I press POWER, and won't turn off.
Check the transducer cable. If the outer jacket of the cable has been cut and the cable is in contact with bare metal, you need to repair the cut with electrical tape. If there is no problem with the cable, disconnect the transducer from the unit and see if the problem is corrected, to confirm the source of the problem.
6. I get gaps in the reading at high speeds.
Your transducer needs adjusting. If the transducer is
7. My unit loses power at high speeds.
Most Humminbird fishfinders have
8. The screen begins to fadeout. Images are not as sharp as normal.
Check the input voltage using Diagnostic. The fishfinder will not operate on input voltages below 10 VDC.
9.The display shows many black dots at high speeds and high sensitivity settings.
You are seeing noise or interference caused by one of several sources. Noise can be caused by other electronic devices. Turn off any nearby electronics and see if the problem goes away. Noise can also be caused by the engine. If engine noise is causing the interference, the problem will intensify at higher RPMs. Increase the engine speed with the boat stationary to isolate this cause. Propeller cavitation can appear as noise