Pinpoint not working

[SdDoc]

My console mounted 7520 just quit working. All I get are what appears to be little bubbles.. no bottom reading. The sensitivity is set at 85...I even tried to reset the unit by pushing the 0 ten times..no luck... Looked at all connections, they appear to be connected...need help.. thanks Dan

[Bob Ritt (Diesel)]

Are you running a Y cable off your rear transducer.. if so, it might need to be programed.. At any rate call pinpoint and get tech. support.. It sounnds like it may be a software problem. Hope this helps.. Tight Lines, Bob Ritt