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Transducer fishfinder Losing bottom for no reason . Even when stopped . Tried a new transducer same problem . The dept just flashes . Everything else works fine

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Garmin 300c fishfinder will go from correct depth to 0.0 ft while traveling.Have to turn it off and restart. It is on Hurricane deck boat 198. It is located between engine and leveling tabs.


My experience as a user is that turbulence around the transducer can cause mine to flash and the depth to remain static.Is your fault affected by speed? Sounds to me that you have a faulty connection causing the transducer to "not register". I'd check connections and also the integrity of the transducer. Hope that helps...
Best of luck

May 28, 2014 | Garmin FISHFINDER 300C NIC ()

1 Answer

I've purchased an Eagle 320 fishfinder 2 years ago and I've had to replace my transducer twice. Every time I'm out fishing lakers in 50 to 100 feet of water, I keep loosing the bottom mark and...


I have never heard of Eagle Fishfinders, but I would be inclined to package it up and send it back to them for checking under warranty, with a fault that should never happen. The brand leaders are Lowrance and Humminbird, with Garmin in 3rd place.

I have a Humminbird 998HD with Side Imaging. I had a 798SI before that and never a problem. the 998 cost me nearly 2 grand Canadian and is used on Lake Ontario, twice a week every week from May to October, and has been faultless. The 798 was used from 2008 to 2014 and also faultless. I think you have a 'Friday Special'.

Mar 14, 2017 | Eagle Fishmark 320 Portable Fishfinder

1 Answer

Raymarine ds500x brand new works good but will give false bottom readings occasionally corrects itself fairly quickly 30 seconds to two minutes wondering why it does this and how to correct it


If the transducer is not correctly mounted this may happen due to air, etc. If the unit never gives a depth reading that looks like dashes
( - - ) then there is likely nothing wrong with it aside from the transducer placement.

Aug 06, 2009 | Raymarine Ds500x Color Fishfinder: Ds500x...

1 Answer

My raymarine ds600x is losing bottom at 120 feet...water temperature is at 220. I have a thru hull transducer...Im wondering if my ducer is fouled up with marine growth or is it a bad ducer or head unit.....


The depth loosing bottom would certainly indicate that you may have growth fouling the transducer, however the sea temp 220 degrees indicates possibly a different problem. Start by being sure the transducer is squeaky clean and see what that does for you.

Jul 23, 2009 | Raymarine Ds600x Fishfinder Display Only

1 Answer

Garmin gps 498.


I think the transducer is down too low. Raise it up so that the center of it is in line with the bottom of the boat.

Jun 02, 2009 | Garmin GPSMAP 498 Fishfinder /...

2 Answers

Garmin Fishfinder 160 will not display bottom contours and does not display depth continuously.


Change your setting from saltwater to fresh water even if you fish in sea water,your transducer is a 00/200KHZ and not a 50/200KHZ.
Good luck
Willem

Mar 01, 2009 | Garmin Fishfinder 160 GPS Receiver

1 Answer

Navman 4150 fishfinder


Depth: Could be for a number of reasons, too deep for the sounder - check the manual for it's max depth. Dirty water, sounder unable to penetrate through to the bottom. Weed or other debris covering the transducer. Transducer on a swing mount & being pushed out of alignment then dropping back in once stopped.

Speed: Is the speed readout controlled by a GPS or paddlewheel? If it's GPS, check the power connection of the sounder, may be loose which would also cause the depth to 'drop out'. If it's paddlewheel, you're down to bad connections or faulty unit.

Oct 16, 2007 | Navman Fish 4150sx GPS Receiver

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