Lowrance HDS-5 Operation Manual page 125

Troubleshooting
4.
Highlight FORCE STATUS UPDATE and press ENT.
c. If the TX is not lighting up then either you do not have
the Radar. There is a fuse inside the processor that
of the front of the unit. Gently slide the front cover off,
to use a pair of pliers to get a good grip on it and gently
try to pull it out. Replace the fuse, the faceplate, and
seated so not to lessen the water seal.
the Radar Antenna or the gauge wire supplying the voltage
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