Check your transducer cable where it plugs into the unit. Check the ears on the cable organizer. Also check the tabs on the unit that hold the cables to the unit. If all is good maybe time for a transducer. Good luck
There is no "cable organizer" with a Helix 5 or Helix 7. They have individual friction fit receptacles for the cable plugs. Just make sure the transducer plug is firmly inserted so it bottoms out.
Humminbird Helix 12 CHIRP SI, 1198c SI, 1198c SI, ONIX 10 SI NT, Helix 7 CHIRP SI GPS G2, SOLIX 12 SI, 360, RC-1