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#11959659 - 12/01/16 12:20 AM Graph flashing on & off
JKib Offline

Registered: 08/04/16
Posts: 74
My Lowrance HDS 7 on the bow of my boat will turn on, then flash off/on. I have checked the connections and all is good. Anyone else dealt with this?

Edited by JKib (12/01/16 03:56 AM)

#11959707 - 12/01/16 05:42 AM Re: Graph flashing on & off [Re: JKib]
44 Diesel Online   content
TFF Team Angler

Registered: 12/25/12
Posts: 3412
Loc: Burleson,TX
Are you wired to the boats wiring harness or directly to battery. Would highly recommend bypassing the boats fuse panel or harness and going straight to battery with online fuse at battery

#11959749 - 12/01/16 06:41 AM Re: Graph flashing on & off [Re: JKib]
shut-up-and-fish Online   content
TFF Celebrity

Registered: 02/08/10
Posts: 9084
Loc: Coppell Tx.

Has the unit been working fine and just started what you have described or did you just install the unit and this is how it is operating from day one?

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#11960123 - 12/01/16 10:26 AM Re: Graph flashing on & off [Re: JKib]
Jones Trolling Motor Offline

Registered: 05/01/11
Posts: 428
Loc: NE Texas/SW Arkansas
Usually when flashing on and off, if it is a new unit, it comes back to a low voltage issue, which could me undersized wiring or not connected correctly. If it's and older unit, on Lowrance it could be water intrusion or a bad key pad.
texarkana, Ark/Tx

#11960776 - 12/01/16 04:22 PM Re: Graph flashing on & off [Re: JKib]
JKib Offline

Registered: 08/04/16
Posts: 74
It was working fine until the last trip out it started doing that. I checked all the connections which were tight, but I cleaned everything then reconnected. I am headed to Rayburn tomorrow, hopefully it was just a poor connection that I didn't see...

#11961513 - 12/01/16 09:36 PM Re: Graph flashing on & off [Re: JKib]
boatmech Offline

Registered: 01/01/08
Posts: 27
Loc: North Padre
I have seen many power cables fail over the years. Make sure that the pin connections inside the graph are clean as well as the cable. Also check the fuses and their sockets I use sand paper and dielectric grease to clean then protect the fuses. Some electronic stores have pin style files. I have repaired a few by cleaning said areas but their always lies the possibility that there is a break in the power wiring which is very difficult to repair.

#11962166 - Yesterday at 09:43 AM Re: Graph flashing on & off [Re: JKib]
T Bird Offline
TFF Team Angler

Registered: 03/07/10
Posts: 3898
Loc: Temple, Texas USA
I had a 12 on console and 7 on bow connected to a single on/off power switch. My bow unit began doing same as yours. Ran dedicated power from battery to 7 on bow. Problem solved.


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