Fish Finder User's Manual

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
problem with your PiranhaMAX™, use the following troubleshooting guide before
calling the Customer Resource Center or sending your unit in for repair.
1. Nothing happens when I turn the unit on.
Check the power cable connection at both ends. Be sure the cable is connected
correctly to a reliable power source — red lead to positive, black lead to
negative or ground. Ensure the power available is between 10 and 20 VDC. If
the unit is wired through a fuse panel, ensure the panel is powered. Often
accessory fuse panels are controlled by a separate switch 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. Examine the contacts on 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 appropriate transducer 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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