Quote Originally Posted by Issy1 View Post
If your unit has no source, that means that the LSS-1 unit is not sending the info to the HDS unit. Look at the LSS-1 unit to see if it has power and all of the cables are connected to the units, if all is ok you may have to send the Lss-1 unit to get looked at by Lowrance.
Okay I am very, very new to Lowrance products. I'm not sure what the LSS-1 unit is?

Nevermind I just realized that LSS stands for Lowrance Structure Scan. So i guess there is a module somewhere where the two HDS units are networked, and that is probably where the issue is?