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Horizontal jagged lines on Lowrance

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Does anyone know what these lines mean? I get them from time to time on my lowrance hook2 9 splitshot on the water with no readings. This picture was on my driveway and the unit was still acting up. Any ideas? Thanks. 


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Horizontal interference lines are usually cause by two units, maybe now and console unit interfering with each other in deeper water when the signals from the front and rear transducers overlap. No idea what's going on with you unit though. That looks completely different.

lowrance will do this out of the water sometimes, fill up a trashcan with water if its on your TM and put it in there then restart everything. It also says your water temp is 110 degrees. a good ole soft reset may be the way to go

  • Author
1 hour ago, Jermination said:

lowrance will do this out of the water sometimes, fill up a trashcan with water if its on your TM and put it in there then restart everything. It also says your water temp is 110 degrees. a good ole soft reset may be the way to go

Thank you I will try this the next time it happens, which is frequent but not always. A lowrance tech thru emailing told me it’s possibly a bad transducer 

  • Super User

^^^bad TD^^^

 

You probably already did these but troubleshooting is troubleshooting... 

  • Did you check every inch of all of your unit's wires to make sure you don't have any exposed, kinked, crushed, or otherwise damaged sections?
  • Checked all terminals for both corrosions and secure fit?
  • Is the wire wrapped around anything else that would be putting out a localized magnetic field, like pump, electrical junction, or motor?
  • Do you have any obvious damage to the transducer itself? Gouges, chips, or foreign objects?
  • Is your unit set to a frequency that the transducer cant handle?
  • Is your transducer getting enough power?
  • Author
2 hours ago, Michigander said:

You probably already did these but troubleshooting is troubleshooting... 

  • Did you check every inch of all of your unit's wires to make sure you don't have any exposed, kinked, crushed, or otherwise damaged sections?
  • Checked all terminals for both corrosions and secure fit?
  • Is the wire wrapped around anything else that would be putting out a localized magnetic field, like pump, electrical junction, or motor?
  • Do you have any obvious damage to the transducer itself? Gouges, chips, or foreign objects?
  • Is your unit set to a frequency that the transducer cant handle?
  • Is your transducer getting enough power?

 Yes sir . Yup. Maybe? The wires are ran along trolling motor shaft. No damage on transducer. 455hz. I would think it’s getting power, I’m not sure lol. 
 

lowrance tech told me to hook it up to a friends transducer and check to see if it’s my unit or transducer, hard to do when my friends don’t have boats lol. But they think it’s the transducer just through exchange of emails and the picture I sent. $80 possible fix. Was going to use the built in transducer on my minn Kota maxxum 74
But I think it’s too old and for a hook2 unit? Unless I’m wrong. 

 

3 minutes ago, Swings are free said:

 Yes sir . Yup. Maybe? The wires are ran along trolling motor shaft. No damage on transducer. 455hz. I would think it’s getting power, I’m not sure lol. 
 

lowrance tech told me to hook it up to a friends transducer and check to see if it’s my unit or transducer, hard to do when my friends don’t have boats lol. But they think it’s the transducer just through exchange of emails and the picture I sent. $80 possible fix. Was going to use the built in transducer on my minn Kota maxxum 74
But I think it’s too old and for a hook2 unit? Unless I’m wrong. 

 

Ok, just checking. You always have to ask.

 

You should be fine connecting it to the trolling motor's transducer, especially for just 2D. You might have to play with the input settings in your unit, but it should work. That will at least tell you whether it's the transducer or the unit.

  • Author
13 minutes ago, Michigander said:

Ok, just checking. You always have to ask.

 

You should be fine connecting it to the trolling motor's transducer, especially for just 2D. You might have to play with the input settings in your unit, but it should work. That will at least tell you whether it's the transducer or the unit.

Thank you

5 minutes ago, Swings are free said:

Thank you

Good luck!

  • Author
15 hours ago, Michigander said:

Ok, just checking. You always have to ask.

 

You should be fine connecting it to the trolling motor's transducer, especially for just 2D. You might have to play with the input settings in your unit, but it should work. That will at least tell you whether it's the transducer or the unit.

My connection for my built in troll motor transducer is a 3 prong wire. The newer adapter cables are 4, universal sonar 2s. 

3 minutes ago, Swings are free said:

My connection for my built in troll motor transducer is a 3 prong wire. The newer adapter cables are 4, universal sonar 2s. 

What cable do you have? 

  • Author
13 minutes ago, Michigander said:

What cable do you have? 

Universal sonar 2 adapter cable mkr-us2-10. Can’t find one for universal sonar 1 online which would be the one I should’ve bought in the first place instead of thinking 3 prongs would fit in 4 holes adapter with not needing the 4th hole for downimaging or something and just only having sonar...lol. Wishful thinking maybe lol

1 hour ago, Swings are free said:

Universal sonar 2 adapter cable mkr-us2-10. Can’t find one for universal sonar 1 online which would be the one I should’ve bought in the first place instead of thinking 3 prongs would fit in 4 holes adapter with not needing the 4th hole for downimaging or something and just only having sonar...lol. Wishful thinking maybe lol

I guess I'm not sure which cables ends you have. I would suggest asking the Lowrance tech for a part number for an adapter cable. Regardless, you're probably in for at least 25% of the cost of a new transducer, but that isn't necessarily the faulty part. Ah, boat problems,

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