Question about Humminbird Boating
Did you check the ground side of the connection? If that checks out there should be a fuse in the unit. You should look at the manual if you have it. If this unit is new to you and the boat sometimes the keypads require you to hold the "on" button in for a bit of time to power up.
Another possibility is the contrast controls are turned to the extreme and you are actually working, but dimmed out. You might want to unplug the transducer and see if the screen does anything.
You would need better testing equipment than the average person has to check frequencies. A radio shop may be able to help if you can not exchange this nonworking unit.
Posted on Sep 03, 2009
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Posted on Jan 02, 2017
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