Troubleshooting

Do not attempt to repair the PiranhaMAX™ yourself. There are no user-serviceable parts inside, and special tools and techniques are required for assembly to ensure the waterproof integrity of the housing. Repairs should be performed only by authorized Humminbird technicians.

Many requests for repair received by Humminbird® involve units that do not actually need repair. These units are returned“no problem found.”If you have a problemwith yourPiranhaMAX™,use the followingtroubleshootingguidebefore calling the Customer ResourceCenter or sending your unit in for repair.

1.Nothing happens when I turn the unit on.

Checkthepower cable connectionat bothends.Be surethecable is connected correctly to a reliable power source — red lead to positive, black lead to negative or ground.Ensure the power availableis between10 and 20 VDC. If the unit is wired through a fuse panel, ensure the panel is powered. Often accessory fusepanels arecontrolled by a separateswitch or the ignition switch.

Also, often a fuse can appear to be good when it is not. Check the fuse with a tester or replace it with a fuse known to be good.

Check the power connection to the PiranhaMAX™. It is possible to force the power cable connector into the cable holder incorrectly. If the connector is reversed, the unit will not work. Examinethe contactson the back of the unit to ensure there is no corrosion.

2.There is no transducer detected.

The PiranhaMAX™ has the ability to detect and identify that a transducer is connected. When powering on, if a message indicates “transducer not connected”, make sure that an appropriatetransducer connector is plugged into the unit. In addition, inspect the transducer cable from end to end for breaks, kinks, or cuts in the outer casing of the cable. Also make sure that the transducer is fully submerged in water. If the transducer is connected to the unit through a switch, temporarily connect it directly to the unit and try again. If none of these actions identifies an obvious problem, the transducer itself is probably at fault. Be sure to include the transducer if returning the unit for repair.

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