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If you know of anyone else that has a Humminbird DI model unit; you can cross-test your 597ci HD DI model unit with them. This will show if the problem is in the unit or the transducer.
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If you know of anyone else that has a Humminbird DI model unit; you can cross-test your 597ci HD DI model unit with them. This will show if the problem is in the unit or the transducer.
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