Humminbird 597 problem

[uglystik]

did you have it on it own battery on my 788 I had it hooked up to my trolling motor battery and when the moter was on it jumped around like yours

[uglystik]

make sure you have it on its own battery

[bus33]

Originally Posted by uglystik

make sure you have it on its own battery

It's not on it's own battery but it is on the cranking battery, not the 24v TM batteries.

[Javelin360]

Originally Posted by bus33

It's not on it's own battery but it is on the cranking battery, not the 24v TM batteries.

It should be fine on a cranking battery. Both of my HB 788's are on the cranking battery and I don't have any issues like this. I have other issues with these units but it is in another post. I can't imagine you would have to have a seperate battery just for the fish finder. If so, I know what I would do with this unit.

[Tim_Kelly]

My 580 sometimes jumps around on the numbers reading the depth (ie 4ft, 7ft etc) though the picture stays constant. I turn off the auto depth range setting, because that can cause the screen to jump, especially if you're over a thick clumpy weed bottom. Also, turning the sensitivity down a bit helps. If it's too high it reads the weed as the bottom, so can jump up and down with the weed.

Not really a problem, but just something I get used to doing. Never had a depth sounder that didn't do that to some extent.

[johnsb31]

Originally Posted by uglystik

make sure you have it on its own battery

I have mine hooked up to the cranking battery... tried it out this weekend and the thing still jumps...tried to change the depth range and sonar sensitivity and noise reduction..still does it. I turned off the trolling motor and unplugged it = still jumps.

But if I keep the bowmount in the water and start driving with the big motor it starts to work fine. How could this be?

thanks guys but the end of the road is near for this unit.

[Tim_Kelly]

Try turning down the chart speed. If it's stable when you're going at some speed with the main motor, it might just be acting up at slower speeds when the bottom isn't changing much. If you slow down the chart speed it might compensate? Worth a try.

[johnsb31]

Originally Posted by Tim_Kelly

Try turning down the chart speed. If it's stable when you're going at some speed with the main motor, it might just be acting up at slower speeds when the bottom isn't changing much. If you slow down the chart speed it might compensate? Worth a try.

Genius! i will try it tomorrow.

[Bemidjiboy]

In terms of the units hooked up to the trolling motor, has anybody contacted or considered contacting Minn-Kota? I wonder how much responsibility they should have with all this...

Johnson outdoors owns Humminbird and Minnkota. Same company.