788ci Humminbird Tempature problem

[RD9]

I bought a used boat with a 788ci fish finder and the tempature sensors is reading improperly. It is running about 20 degrees lower then the surface tempature. It seems to be working tempature varried from 17 to 20 degrees, so its functions in some capacity. Called Humminbird and they said I need a new transducer. I asked if you could re-calibrate the unit was told no. Just want to double check. Any one have the same issue and if so did they by the seperate tempature sensor or replace the transducer all together.

Thanks Again

[lakebound88]

The 788ci had transducer problems. Depending on how old the unit is and date of purchase you may have the defective transducer.

Give them a call and see.

Nick

Sent from my SCH-I545 using Lake Ontario United mobile app

[ray koziatek]

a little corrision at the back pin connection can vary temps