7.The display begins to fade out. Images are not as sharp as normal.

Check the inputvoltage. The PiranhaMAX™ will not operate on inputvoltages below 10 VDC.

8.The display shows many black dots at high sensitivitysettings.

You are seeing noise or interference caused by one of several sources.Noise can be caused by electronic devices. Turn off any nearby electronicsand see if the problem goes away. Noise can also be caused by the engine. If engine noise is causing the interference, the problem will intensifyat higher RPMs. Increase the engine speed with the boat stationary to isolate this cause. Propeller cavitation can also appear as noise on the display.If the transducer is mounted too close to the propeller,the turbulencegenerated can interfere with the sonar signal. Make sure that the transducer is mounted at least 15" (380 mm) from the propeller.

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