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  • Electronics Question

    Posted by hooperj14 on February 5, 2014 at 2:00 am

    I bought this Lowrance elite 7 last year and since the first time i had it out, it has had this clutter on the screen. I have played with the settings but nothing really seems to work. I can still see fish through the clutter, but I need to fix this. Any suggestions?

    simplecircuit replied 10 years, 4 months ago 3 Members · 8 Replies
  • 8 Replies
  • Brian

    Administrator
    February 5, 2014 at 3:34 am

    What is the sensitivity at?

  • simplecircuit

    Member
    February 5, 2014 at 4:54 pm

    A few things…
    where is the transducer located? does this happen all the time? or only when moving? is the unit hooked up to the big motor battery?
    what sensitivity is the graph set to? after a lot of trial and error, i have a decent understanding of graphs and might be able to help you out.
    j.

  • simplecircuit

    Member
    February 5, 2014 at 5:05 pm

    also…
    is this graph at the console or the bow? i’m guessing bow based on the 1mph sog speed.
    j.

  • hooperj14

    Member
    February 5, 2014 at 7:20 pm

    It is a bow based unit. It is wired to my starting battery and the transducer is off the the right of the running pad on the back of the boat. It has clutter when the motor is off and when it is running. I do notice it loses bottom contact very easily when I’m running. When I’m fishing the only thing i’m running is the lowrance, so i don’t know how it would be interference. Thanks, Jack

  • hooperj14

    Member
    February 5, 2014 at 8:30 pm

    correction. It is a console based unit…my only unit on the boat.

  • simplecircuit

    Member
    February 5, 2014 at 9:15 pm

    couple more questions…
    do you have an aluminum or fiberglass boat? also, did your previous unit do the same thing? or use the same transducer location?
    j.

  • hooperj14

    Member
    February 5, 2014 at 9:37 pm

    It’s a fiberglass boat. When I bought it it had a very cheap one on there that I never turned on. Same location for the transducer. I can take a picture and upload it when I get home. I appreciate you helping me with this.

  • simplecircuit

    Member
    February 6, 2014 at 2:29 am

    A picture would help.
    I’m guessing that you are losing bottom for one of two reasons.

    1 – the transducer is mounted on the transom where when you are on plane, it isn’t fully in the water, or the turbulence behind the boat is scrambling it up.

    2 – you are driving fast over water that is deep, causing the ping returns to get missed by the transducer and confusing the unit. This happens on my boat around 55-60mph over the main channel on the lower end of priest. S, maybe 80ft deep? My transducer is mounted as a shoot thru in the bottom of the bilge area. So, I know it’s still in the water since I see the bottom at 30-40ft. The graph just loses it altogether once I get any deeper.

    As for the screen clutter, it almost looks like it could legitimately be bait fish. I’m assuming that this is happening at all depths and speeds?

    J

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