Side Imaging Forums > 797c SI

unit doesn't work properly after about 95 ft

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chetmaychua:
Hi all,
My unit is 797C2 SI combo, firmware 5.450
I recently took the boat to the ocean. Everything worked fine until about 95FT. The unit shown depth reading at 1ft and nothing else was working properly. When I took the boat back to around 80 ft and the unit started working normal again.
Troubleshooting:
Contacted tech support while having trouble in the ocean, they walked me through all the settings and didn't resolve.
Replaced the power cable with a brand new one, bought a new battery just dedicated for the unit. Power is out of the question.
Upgraded firmware to 5.450 latest.
What else should I replace? I am thinking about buying a new transducer.
Any suggestion is appreciated.
Thanks
CMC

ITGEEK:
These units are not designed for the ocean (even though they state they'll go very deep).
They are mainly used for shallow water Bass fishing.
They're have been a few complaints when trying to use Humminbird's in deep water.
If you want something proven for the ocean, maybe look at a Furuno.
The new models (Onix), may be capable of using in deep water.

Landry:
It should still read waaaaaay past 80' though. Cmon. Ther is something wrong. Return it.

bobcoy:
Landry that is an old unit. Not sure it would be worth repairing. He needs to borrow somebody's spare transducer before he pays for a reworked unit. Bob

chetmaychua:
Thanks for your feedback.
I decided to buy a new transducer. I will try it this Sunday and let you know.
Humminbird XNT 9 SI 180 T Transom Mount Transducer

Could you confirm that this unit is a 'dualbeam"?
Thanks,
CMC

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