Sonar does not appear to work - not picking up depths or bottom structure. All other functions look good.

Question 1

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My Mark 4 sometimes shows incorrect depths. The transducer has not moved and no problem with electrical. One point it is working fine, the screen then runs multiple vertical lines and the depth chan

Take note if when the vertical lines appear on the screen if the depth numbers begin to flash. If this is the case then the transducer has lost bottom contact and the unit is trying to reacquire bottom contact. If the transducer is parallel to the bottom of the lake while your boat is not moving then, the next time you have it on the trailer, turn your unit on and go listen and or feel the transducer to see if you can hear and or feel the tick or sonar ping. If you can't your transducer may be faulty. If the loss of bottom contact occurs when you are moving it will happen at a certain speed. This is the result of air bubbles passing under the transducer and disrupting the sonar signal causing loss of bottom contact.

Sep 19, 2014 • Lowrance Mark 4 Chartplotter/fishfinder...

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Sonar not Working

Transducer not parallel to bottom - kicked up. Manually set depth to see if the auto depth is the problem.

Aug 12, 2017 • Lowrance Elite-4x DSI Sonar with...

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1answer

No bottom structure and depth flashes

your system is not locking to bottom ( bottom lock) go into menu scroll down to functions click it see if bottom lock is high lighted if not turn it on by clicking on it if it is on ..you need a new transducer

Sep 22, 2013 • Lowrance X515c Df 5" Screen Color 50/200...

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Garmin 498

burned up get a new one they do that at times( no bottom lock)

Sep 15, 2013 • Boating

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1answer

Can not get my HDS-5x and structure scan to interface

ooooooooook click menu button twice go to functions scroll down to structure scan see if the circle beside it is high lighted if not click on it to turn it on do this to both units

Mar 25, 2013 • Lowrance LSS1 StructureScan Sonar (Lss1...

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1answer

My lowrance sturcture scan shows the bottom and depth but doesn't show structure

don't quite understand what your saying far as the question..when you click the page button on your unit does it show structure scan on the page and if so you go into structure scan and its not showing structure on the screen ?? maybe you need to (fine tune ) your unit or check your transducer to see if its working

May 28, 2011 • Lowrance LSS1 StructureScan Sonar (Lss1...

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1answer

My Structure Scan display is good on the left side and the right side does not fill the screen. My transducer is mounted under my boat on the step. I have a HDS8 and everything is brand new. All other...

verify cable harness integrity at base connection of transducer , replace cable or check settings easy fix would be change display unit if unit under warranty as replacing transducer is not easy and economical

Jan 17, 2018 • Lowrance LSS1 StructureScan Sonar (Lss1...

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1answer

Built in transducer is not picking up/transferring depth to graph

I havew a Minn Kota trolling motor on a Z21 Ranger. Minn Kota has a built in (puck type) transducer on the motor. I have a lowrance 135x on the front. The lowrance will read the temp but will blink the depth. I switched out the depth finder with another 135x with the same results. I have a 522c gps unit networked together and mounted on the console that works fine. Any suggestions on the problem with the 135x?

Jul 27, 2009 • Minn Kota Maxxum 70 Universal Motor/Sonar...

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First time run, everything mounted correctly, power on, no depth or sonar return.

So the depth is flashing and you don't see any bottom return at all, right?

Are you in the water, or trying it out before you put the boat in the water?
If you are not in the water, try it out in the water because it can be difficult to get any kind of return out of the water.

Try resetting the X67c to factory defaults:
1. Turn unit off
2. Press and hold the down arrow key
3. Press PWR while still holding the down arrow key, the unit will enter production test mode. Let go of the down arrow key
4. Press EXIT 5 times
5. Press ENT and the unit will shut off

Turn it back on and if you still have the same problem, depth flashing 0.0 or 0.5 or 60 probably and no bottom, then a good bet would be a bad transducer.

Jul 13, 2009 • Lowrance X67c Deep Water Color Sonar...

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Proper set up for lowrance sonar

Where do you use your boat?

There are so many variables it's hard to fit it all here, but there are some excellent tutorials on the Lowrance website. The most important thing is to pick the right frequency, for the depth of the water. (200khz for less than 70', and 50 khz for greater depths). Depending on how serious you are about fishing, there are a lot of extras that you may never use. The key is to figure out which features will help you the most and forget about the rest.

You may also get some help at this link: FixYa Service Directory

It's common for SONAR to lose contact with the bottom at high speeds. The better the transducer installation, the faster you can go. Turbulence and bubbles will cause the SONAR to drop out. Lowrance's transducer installation guide explains it very clearly.

Jan 03, 2009 • Boating

Question 2

Anonymous

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Posted on Dec 14, 2009

Anonymous

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Joined: Dec 14, 2009

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This problem is most likely linked with your transducer.

1. Check your transducer cable and make sure the plug terminals are clean, as well as the plug on the back of the unit.
2. Make sure the transducer cable is plugged in correctly and securely.
3. Make sure the transducer is in the water and mounted according to the directions, parallel to the bottom of the boat
4. Turn the unit on while the boat is in the water, but with the engine OFF.

IF it works when the engine is off, but vanishes when the engine is on, you may be having electrical interference.

IF it works when the engine is running, but vanishes when the boat is moving, it is a turbulence problem. Move the transducer.

IF it does not work at all, try borrowing a new or a "known good" transducer and seeing if it works then. If so, replace the transducer.

Let us know if these work or now.

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Sonar does not appear to work - not picking up depths or bottom structure. All other functions look good.

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Anonymous

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My Mark 4 sometimes shows incorrect depths. The transducer has not moved and no problem with electrical. One point it is working fine, the screen then runs multiple vertical lines and the depth chan

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Fishmark 320 Portable Fishfinder

My Mark 4 sometimes shows incorrect depths. The transducer has not moved and no problem with electrical. One point it is working fine, the screen then runs multiple vertical lines and the depth chan

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Sonar does not appear to work - not picking up depths or bottom structure. All other functions look good.

1 Answer

Anonymous

Add Your Answer

Attachments: Added items

Related Questions:

My Mark 4 sometimes shows incorrect depths. The transducer has not moved and no problem with electrical. One point it is working fine, the screen then runs multiple vertical lines and the depth chan

Sonar not Working

No bottom structure and depth flashes

Garmin 498

Can not get my HDS-5x and structure scan to interface

My lowrance sturcture scan shows the bottom and depth but doesn't show structure

My Structure Scan display is good on the left side and the right side does not fill the screen. My transducer is mounted under my boat on the step. I have a HDS8 and everything is brand new. All other...

Built in transducer is not picking up/transferring depth to graph

First time run, everything mounted correctly, power on, no depth or sonar return.

Proper set up for lowrance sonar

Not finding what you are looking for?

Fishmark 320 Portable Fishfinder

My Mark 4 sometimes shows incorrect depths. The transducer has not moved and no problem with electrical. One point it is working fine, the screen then runs multiple vertical lines and the depth chan

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