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Troubleshooting
Before contacting the Humminbird® Customer Resource Center, please read the
following section. Taking the time to review these troubleshooting guidelines may
allow you to solve a performance problem yourself, and therefore avoid sending
your unit back for repair.
NOTE: Do not attempt to repair the HDR 650 yourself, as there are no user-serviceable
parts inside, and special tools and techniques are required for reassembly in order to
maintain the waterproof integrity of the housing. Repairs should be performed only by
authorized Humminbird® technicians.
HDR 650 Doesn't Power Up
If your HDR 650 doesn't power up, refer to the Installation section, and make
sure that:
• the power cable is properly connected to the HDR 650;
• the power cable is wired correctly, with red to positive battery terminal and
black to negative terminal or ground;
• the fuse is operational; a fuse can often appear to be good when in fact it
is not; check the fuse with a tester or replace it with a known good fuse;
• if the unit is wired through a fuse panel, make sure that the panel is
powered, as accessory fuse panels are often controlled by a separate
switch, or even the ignition switch of the boat;
• the battery voltage of the power connector is between 10 and 20 VDC.
Correct any known problems, including removing corrosion from the battery
terminals or wiring, or actually replacing the battery if necessary.
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Troubleshooting