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Author Topic:   Navman 4350 Problem
dmeswi posted 11-11-2008 12:10 PM ET (US)   Profile for dmeswi   Send Email to dmeswi  
I have a Navman 4350 fishfinder which has output power up to 200W RMS. It works fine out in the Gulf and in the Pensacola Pass where the bottom is primarily sand, but when I get into the shallower bay areas it sometimes fails to indicate the dept of the water.

If I lose the bottom reading for a short period and then get it back, I'll lose it again if I make a u-turn and go over the same area. This leads me to believe the unit can't read certain bottom types.

Can someone tell me what's going on and if there is something that can be done to improve the performance of this unit. Would a different unit perform any better?


Casco Bay Outrage posted 11-11-2008 02:07 PM ET (US)     Profile for Casco Bay Outrage  Send Email to Casco Bay Outrage     
Dennis -

Garmin has pretty good/excellent customer service. I suggest you contact them.

SJUAE posted 11-14-2008 04:21 PM ET (US)     Profile for SJUAE    

I have exactly the same problem in shallow water mainly sand

I thought it was a loose connection or failing sender

I've tried auto gain and manual full gain it's just intermittant readings and worse at speed

Sometimes the tracking also stops more often than not it just cant find the bottom so shows --.--

dmeswi posted 11-17-2008 07:00 PM ET (US)     Profile for dmeswi  Send Email to dmeswi     
First, I don't think Garmin has anything to do with Navman.

It is also interesting someone else is having the same problem and I suspect many people are having this problem. Does anyone have a solution?


kamie posted 11-17-2008 08:44 PM ET (US)     Profile for kamie  Send Email to kamie     
I would suggest you contact Northstar as they are servicing the Navman brand now. I believe their Northstar 435 is the product you own, or rather their rebranded version.

The were very helpful when my Navman 3100 fuel flow went on the fritz.

dmeswi posted 11-18-2008 04:36 PM ET (US)     Profile for dmeswi  Send Email to dmeswi     

Thanks for the suggestion. I sent an email to Northstar customer service and hopefully I'll hear from them soom.


SJUAE posted 11-18-2008 07:45 PM ET (US)     Profile for SJUAE    

Let us know what they advise

I noticed this week if I swicth on and off a few times it seems to work at slow speeds

Note my one was OEM/BW installed


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