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Jan 23rd, 2013
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Humminbird 788ci HD #10237725 08/26/14 12:20 AM
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This system came with my Triton 18 and lately it has not been showing a depth of 1.5 feet. I have gently cleaned the transducer but it still does read the depth accurately. Everything else reads out correctly. What should I do next?

Re: Humminbird 788ci HD [Re: RHP] #10237843 08/26/14 01:00 AM
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Wayne P. Online Content
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If it has not been showing 1.5' depth, what does it show--actual water depth?

If it still does read the depth accurately, what is the issue?

Last edited by Wayne P.; 08/26/14 01:01 AM.

Helix 12 CHIRP MEGA SI+ GPS G3N and G4N, 1198c SI, SOLIX 10 SI G3,
Helix 10 MEGA DI+ GPS G3N, SOLIX 12 SI and G3, MEGA 360, RC-1
Re: Humminbird 788ci HD [Re: RHP] #10237950 08/26/14 01:33 AM
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Not really sure what the actual problem by your question but the standard answer is to check to see if it has the latest software, then reset to default,s and then try it set for saltwater.



Re: Humminbird 788ci HD [Re: RHP] #10238162 08/26/14 02:54 AM
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Okay, I'll try that tomorrow. Thanks.

Re: Humminbird 788ci HD [Re: RHP] #10239297 08/26/14 05:11 PM
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Okay, I see I typed wrong- the depth finder shows 1.5 feet even when I am in 20 feet of water. I turn it off and then on again and get the true depth but if I move using my trolling motor, it reverts back to 1.5 feet and stays there until I restart it.

Re: Humminbird 788ci HD [Re: RHP] #10239601 08/26/14 07:06 PM
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Originally Posted By: RHP
Okay, I see I typed wrong- the depth finder shows 1.5 feet even when I am in 20 feet of water. I turn it off and then on again and get the true depth but if I move using my trolling motor, it reverts back to 1.5 feet and stays there until I restart it.


Have you checked the unit Voltage readout to see if you have enough power to fully operate the unit?


Helix 12 CHIRP MEGA SI+ GPS G3N and G4N, 1198c SI, SOLIX 10 SI G3,
Helix 10 MEGA DI+ GPS G3N, SOLIX 12 SI and G3, MEGA 360, RC-1
Re: Humminbird 788ci HD [Re: RHP] #10250102 08/31/14 02:04 AM
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Yeah, the power is fine. I need to reset the whole unit back to factory settings and start over. Thanks.

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