Fuzziness or noise on one side of Side Imaging

Went to Lake Eufaula yesterday to try out my new terrova. While idling through pataula Creek I found some interesting structures submerged under the water. I am still having a bit of fuzz or static is the best way to describe it on the right side imaging. I have attached some images of what I found that I took with my phone camera as well as the back of my boat so you can see transducer placement. I have two transducers so I can see left and right without having to raise my motor and they are close to the outboard due to the shape of the back of the boat. The right side is always brighter than the left. I don't know if I may have to tilt the transducer up a little bit on that right side or what. If anybody has any ideas regarding this I sure would appreciate it.Attachment 407719Attachment 407720Attachment 407721Attachment 407722

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What’s it look like when you use just one ducer by itself? Then the other?

That's a test I will need to do. Wonder if I could swap the cables at the splitter and make the left show as the right side and left show as right.

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Originally Posted by huntersdad

That's a test I will need to do. Wonder if I could swap the cables at the splitter and make the left show as the right side and left show as right.

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There may be some blockage if the port xducer looks right and the starboard xducer looks left ... the SI beam covers all the way to waters surface ...

This would be a good troubleshooting step if you can physically swap sides with each xducer ...

This may determine if the fuzziness is in the head unit or the current starboard xducer ...

Rickie

I will test it by the weekend atleast and report back. I put a ticket in with humminbird as well, so maybe they have some ideas also.

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I'm still getting the bad fuzziness at anyting over 10 to 12 feet deep. Switching to 455 doesn't make it any better. I have went from the lowest sensitivity and contrast to highest and everything in between. I know right now the crappie should be deep but with my unit the way it is I can't see anything in the water column. See attached photo. It also does this when switching from mega to 455 on di. The fuzz is really bad then when I switch, the fuzz clears up in the mega half then reappears in the 455. Is this even normal?Attachment 407825Attachment 407827

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The DI looks like a thermocline to me.

In the first image, I was running the down scan in mega. It still had the same fuzz as you see where I clicked the 455. But once I selected the 455 the fuzz cleared out of the section that was Mega but reappeared after selecting 455.

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If it were the thermocline wouldn't it show on the 2d as well?

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The fuzz being on one side only indicates a transducer problem or head unit problem ...

Have you tried swapping sides with the xducers yet ... ??

Rickie

No I haven't. I was given the opportunity to get on the water today so did more experimenting with trying different things. Humminbird said it could be the y cable so my plan is to do like you said and start with the right transducer since it's already in place and then swap. Today when the fuzziness started it was around 15 ft and got thicker the deeper I got. At around 25 feet the fuzz was so thick you could not tell fish from anything else. 8 to 10 feet the image looks nice except for a little propwash on the right side depending on my speed and tilt. I also ran with trolling motor only to be sure it wasn't an interference issue from the outboard but the issue remained until I came back shallow. In the image I posted, I was running with the side image down image and 2D sonar on one screen and things started getting fuzzy on the down image so I decided to go from Mega to 455, as soon as I press the check button the image clears up immediately where the mega was showing the fuzz and then the fuzz continues while on 455. The same issue happens if I'm on the down image only screen. Things seem quite clear around 8 feet but from 14 ft and deeper it gets fuzzier so you can't tell fish from anything else on that screen either. I have to decrease sensitivity and adjust contrast so much to clear up that nothing shows up. Too bad I don't know anyone around my area that we could do an on the water test. Same body of water, same settings and then swap units to see if things get better or worse. I've never owned a hummingbird unit before so I'm not familiar with how things should be but I know what this is doing is not right In regards to the long press button sounds as well as the screen flashing tells me that something is not right but hummingbird will not have me to send the unit/ transducers in for diagnostics.

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Originally Posted by huntersdad

If it were the thermocline wouldn't it show on the 2d as well?

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Yeah I didn’t see the 2d when looking last night.

On the 2d not showing thermocline, it would depend on how high his sensitivity was and whether he was using clear mode or max mode as well. I can see where it might show up on the DI and SI but not on the 2d.

Hummingbird is having me send the unit in for Diagnostics so I will report back the findings hopefully the issue is taken care of

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Quote:

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Originally Posted by huntersdad

Hummingbird is having me send the unit in for Diagnostics so I will report back the findings hopefully the issue is taken care of

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Sorry to resurrect and old thread, but what was the outcome of this issue? I am having a similar problem with my new mega si+ unit.