Trouble with my M68c

[TimBuck2]

Has anyone experienced these problems before. I have to have my Sensitivity maxed to see my lure. As soon as I get within 1 ft of the bottom I get spikes like it's trying to recalculate the bottom structure. Makes it exasperating to use. That and there is zero noise reduction. When my buddy has his 67c running, mine is the one that 90% of the time gets whacked out. Am I missing something, or does it have to be sent in?

[SalmonJedi]

I would check on how your battery is doing. In the menus of the M68 you should be able to see Voltage. mine gets funky when the voltage drops into the mid 10's which happens more frequently now with a 4 year old battery. Also I found that when working next to another Lowrance unit set one unit to 75% ping speed and the other to 100% ping speed clears up nearly all the interference. Of course 75% ping isn't optimal to use but its a still a very fishable setting.

Hope this helps.

[Todd_J]

The other thing I would look at is the Depth Range. Make sure the Auto Depth Range is UNCHECKED and the Manual Depth Range is set appropriately to the depth you are currently fishing. I've noticed anomalies when fishing in 20 FOW when the unit is set for 40 FOW.

Are you fishing close (within 50 feet) to your buddy with the 67c? You might want to increase your distance or fiddle with the Surface Clarity, Noise Rejection, and raise your ducer to just below the surface of the Water.

As SalmonJedi said, I had a battery going bad on me and would do all sorts of weird things to the performance. Once I replace it and started using the Marcum Digital Charging System, all battery issues have vanished.

[TimBuck2]

Well I was out of options so I tried to find out the process for sending it in when I came across some info on the web site detailing how to do a Soft Reset(retains the GPS settings) or a Hard Reset(lose all settings). Yesterday I performed the Soft Reset and was happily surprised that, that cleared up the issues I was having. Hope this helps anyone else that might be having troubles.

TB2

[JimBuck]

What is the command for doing a Soft Reset TimBuck2? I've seen this posted several times before but my 522i began acting up this weekend in a similar fashion to your M68c. Cheers.

[TimBuck2]

I checked and the procedure for a Soft Reset is the same for yours JimBuck. With the unit OFF Press and Hold the Pages key, then Hold the Power Key until the Alarm notice and the map of North America behind it are displayed. Release both keys and go back in and set your Surface Clarity and Noise Rejection settings. Turn Off the Auto Sens, and Auto Depth. Reset your Ping Speed, Depth, Sensitivity. Hopefully this works for yours too.

TB2