Bob, first off ... to Crappie.com !!

I'm no expert on this unit, which is why I started this thread in the first place.

I don't really know if anyone is paying much attention to this thread, anymore, since the unit has been discontinued by Lowrance in favor of the Elite series that has the 2d sonar capability added back to the units.

You might want to get in touch with Lowrance & see if they have any suggestions (other than purchasing another unit). Or you could wait & see if anyone answers on this thread, or even post a separate thread on this forum or on the sidescan/downscan sub-forum (just in case interest has been lost in this thread by the members that have previously replied).

If I were to try and answer your question, I'd simply be guessing and that wouldn't benefit either of us or anyone else that might end up with the same problem & come here looking for a fix. I haven't had that particular problem occur with my unit, so I don't know how to remedy the situation. Sorry

... cp