[CA] [CA11] L365 LOSS OF DISPLAY

[captainjtime]

I have a Raytheon L365 fish/depth finder and I accidentally hooked one of my boat batteries up backwards.

After I did this, the display on my L365 only shows vertically lines scrolling by and no digits or text can be seen.

I checked and replaced all of the fuses and the unit (except the display) seems to be operational as I can still hear the alarm when I enter shallow water.

Everything else on the boat seems to be operating fine after I replaced a main fuse.

Did I damage the unit to the point that it needs to be replaced or is there a solution to this issue?

Thanks in advance for any assistance/suggestions.