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

Registered: 08/04/16
Posts: 136
Loc: SETX
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)

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#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: 4228
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

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#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: 9422
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
Angler

Registered: 05/01/11
Posts: 460
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.
John
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www.jonestrollingmotor.com
texarkana, Ark/Tx

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

Registered: 08/04/16
Posts: 136
Loc: SETX
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...

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

Registered: 01/01/08
Posts: 30
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.

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#11962166 - 12/02/16 09:43 AM Re: Graph flashing on & off [Re: JKib]
T Bird Online   content
TFF Team Angler

Registered: 03/07/10
Posts: 4242
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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#12070613 - 02/01/17 05:53 AM Re: Graph flashing on & off [Re: T Bird]
JKib Offline
Outdoorsman

Registered: 08/04/16
Posts: 136
Loc: SETX
Originally Posted By: T Bird
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.


I might try this, mine is currently ran how yours were.


Edited by JKib (02/01/17 05:53 AM)

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#12071162 - 02/01/17 11:55 AM Re: Graph flashing on & off [Re: JKib]
JIM SR. Offline
TFF Celebrity

Registered: 09/25/06
Posts: 6600
Loc: NRH/Fork again ! GET THE NET
weak battery..?

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#12071555 - 02/01/17 03:46 PM Re: Graph flashing on & off [Re: JKib]
Corey Stanley Offline
Pro Angler

Registered: 10/26/09
Posts: 880
Loc: Tx
It def sounds like it is a voltage issue...running direct on the larger units is good practice vs trying to load all of the units onto one power switch. Especially if running 2+ units that have a large screen size.
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