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Old 29 August 2001, 09:09   #1
Country: UK - England
Town: Great Harwood, Lancs
Boat name: Tigger II
Make: Bombardier Aerodeck
Length: 3m +
Engine: Tohatsu 25HP
Join Date: Jul 2001
Posts: 626
Garmin 160 Blue Problems

I have recently bought a Garmin 160 Blue fish finder.

The unit loses lock on the botton and will not show depth once you start moving much greater than about 5 kts. Once you stop it takes upto 60 seconds to give you a updated bottom sounding.

The main unit has been back to Garmin and I am on my THIRD replacement, and on my second transducer.

The transducer is mounted about 2-3" outside the prop arc and about 0.25" below the transon, measured to the bottom of the transducer. and mounted level with the water (at a angle to the hull, being a V.) I have tried diferent transducer depths with no success.

Boat is a Ribcraft 4.8

Has anyone else had there or similar problems?.
Is it just my setup or does Garmin have a problem>?.

Any comment welcome as I am stuck.

Garygee is offline   Reply With Quote
Old 29 August 2001, 14:44   #2
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Country: UK - Isle of Man
Town: Peel, IOM
Boat name: Saffron
Make: Scorpion
Length: 8m +
Engine: I/B Diesel 315hp
Join Date: Nov 2000
Posts: 2,197
I had a Garmin 235 (with fishfinder). The unit worked very well EXCEPT the fishfinder. I got the unit replaced 5 times and had my installation checked professionally by two diferent companies.
I guess Garmin have a problem in this area. Their new for old replacement policy is fast and efficient and unquestioning. They admit though they NEVER analyse failed returns so they never find out whats wrong.
Seems daft to me too, but thats company policy for you.
Brian is offline   Reply With Quote
Old 29 August 2001, 17:31   #3
Country: Ireland
Town: Dublin & Kerry
Boat name: Limanda
Make: Arvor & Valiant
Length: 6m +
Engine: IB 85hp dsl; 8hp Yam
Join Date: Jan 2001
Posts: 57
The fact that it works at up to 5 knots indicates a problem with the positioning of the transducer. Turbulence or prop noise could be the cause. Check that the hull area in front of the transducer is clear of any protrusions. Also, 3in outside the prop arc still sounds much too close to me. Most transducers I see are mounted about midway between the keel line and the point where the transom meets the waterline.

Michael is offline   Reply With Quote

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