Humminbird Boating - Page 4 - Recent Questions, Troubleshooting & Support

Be sure you have your unit set in "max mode" and run it on 200khz frequency see if this makes any difference. Also be sure your unit is wired directly to your battery not through a switch or fuse panel as this can rob your unit of voltage, impacting the strength of your sonar signal.

Yes

Hummingbird systems have the ability to turn off pages so they will not be displayed. On your main menu look for the "views" tab. Scroll down to the sonar view page and see if it shows visible or hidden by that page. If it says hidden, select visible and you should be all set.

You need to set the transducer lower. When at speed, the hull of the ship raises up out of the water and hence your transducer is probably not deep enough at these times to give a proper reading.

You will find here http://www.humminbird.com/Category/Support/Product-Manuals/

use the top left and right in the star pattern. looking at the 6 pin layout (center pin included), the pins at 10:00 and 2:00 are for the power.

Sounds like main board fault. Check the battery voltage too. If it is less than normal, this kind of fault can occur. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Pull up older posts. Surf the site with patience. Do a search by type in the brand name of your device at its search box and press "Enter". http://electronicshelponline.blogspot.com/