Hey Waldo….this is what you do to save a trip to Cabelas, unless you want to go????? First of all download all your waypoints onto a blank sd card (256mb should be fine) then transfer all your data to this card. Then do a hard restart (power the unit off then hold down ZOUT+ZIN+POWER button unit the US map shows up), this should restore life to the 332c and allow it to continue working properly. Final step is to load the waypoints (or data) back onto the 332c.
If anyone ever expierences problems with lowrance units the hard or soft restart is recommended by Lowrance techs, so you can save yourself some time and do it yourself. IF that doesn’t work then you have to call Lowrance because the issue is much deeper.
MAKE SURE YOU SAVE YOUR DATA BEFORE DOING A HARD RESTART.
otherwise if you do the hard restart without backing up your data it will be lost..
Good luck