Question about Eagle Fishmark 320 Portable Fishfinder

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How does the battery pack connect to the unit on a fishmark 320

I can't see any way to connect the battery pack to the unit unless there is something missing.

Posted by Anonymous on

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Posted on Jan 02, 2017

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SOURCE: where can I find a manual for an Eagle fishmark

Try this.

http://www.eaglenav.com/upload/Eagle/Documents/Manuals/seafinder320df_0143-661_101602.pdf.

Posted on Oct 19, 2009

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  • 1 Answer

SOURCE: display on eagle fishmark 320 does not come on

Any luck on finding the problem ? Mines doing the same thing.

Posted on May 12, 2013

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My fishmark 320 hasn't been turned on for 3 years, there are beeps when I push the buttons but nothing comes on the screen


do you have this unit on the boat with transducer hooked up or you have it wired to a battery seeing if it just comes on

Sep 10, 2013 | Boating

2 Answers

Won't work over certain speeds


Think of where the transducer is fitted on your boat . As turbulence is the only problem you need to worry about. It needs too be on the transom but in between the lower 2 chines

Apr 17, 2012 | Eagle Fishmark 320 Portable Fishfinder

2 Answers

Just purchased and Eagle Fishmark 320 used. Will not display depth reading - just shows 0'0"? I have reset to factory settings. We have had in lake,same thing. Right now in 5 gallon bucket of...


Hello! Do you have the PDF users guide for your unit? I'm looking at a copy in the troubleshooting section...I don't want to cover information you have already looked at or tried...Since I do not know if you have that manual I'll give you a few items to check...

Measure the battery at the units power connector...Must be at least 11 volts DC...In portable mode it uses 8 D cell batteries= 12 volts
Make certain the Transducer is securely connected...
Did you use the in-line fuse supplied with the unit?...
Try the Manual Depth Range...First turn off Auto Depth Range...From the sonar Page Hit MENU...Down-arrow to Auto Depth Range...Hit ENT...Hit Up-Arrow to Depth Range...Hit ENT..
And the Depth Scale Range appears...Up-Arrow or Down-Arrow to select a different depth range...Hit Exit...The minimum depth the unit can read is 5 feet...

If you do not have the PDF guide, here is the link...

http://www.eaglenav.com/upload/Eagle/Documents/Manuals/seafinder320df_0143-661_101602.pdf


Let me know how you make out....Guru....Saailer

Sep 11, 2011 | Eagle Fishmark 320 Portable Fishfinder

1 Answer

The unit will not show a depth reading - just shows 0 0?


Try adjusting ur puck,and go into menu look for a shallow,fresh water setting.less than a 100ft put in shallow all other depths in fresh

Sep 11, 2011 | Eagle Fishmark 320 Portable Fishfinder

1 Answer

My Eagle will no longer read the bottom beyond 50 ft, even with the boat stopped and the outboard turned off. The voltage is listed at 12.1 volts; there are no kinks or cuts in the trasnducer cable.


It seems most likely that your manual range has accidentally been set for 50' or less. Go into the menu and set to auto range. Here are the exact keystrokes as shown on PAGE 51 of your manual:
MENU> scroll down to DEPTH RANGE> ENTER> Exit

If this doesn't work, try doing a ful reset, as shown on PAGE 64 of your manual:
MANU> MENU> scroll down to RESET OPTIONS> <- to YES> ENTER

The Fishmark 320 is an excellent unit, and it works great in full-auto mode if you have the transducer mounted properly. Let us know if this doesn't fix your problem.

Dec 13, 2009 | Eagle Fishmark 320 Portable Fishfinder

1 Answer

Dropped it on the boat deck..No longer turns on.


if it has an internal battery make sure that didn't come unhooked. if you have an external source of power it may have broken the connection inside. or it is possible the unit has internal broken parts from being dropped. the only way to fix that is to take it apart.

Dec 07, 2009 | Eagle Fishmark 320 Portable Fishfinder

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