Garmin Boating - Page 2 - Recent Questions, Troubleshooting & Support

I need screen lcd Garmin 4012.

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Short in system. if in warranty send to manufacturer. If not open the case and see if any components and wiring are damaged or wire came lose from mother board.

would this help https://www8.garmin.com/support/collection.jsp?product=010-00162-00

I would guess that "sonar failure" would mean that no signal is being received from the transducer. Trouble shoot accordingly.

Hi Lakshmaan: The first thing I would check would be the electrical connections from the transducer, and the transducer wire.

I'd start by checking the transducer function. The easiest way is to borrow another one and see if it works. If it does, and yours doesn't, check for broken wires.

You lost your power wires + & - or blown a fuse. The other two are the transducer connections.

The PWR button also adjust the backlight of unit. Press and quickly release to cycle through brightness settings. All else fails call Garmin www.garmin.com/support

Save the location just as you would normally save to your favorites except that save it as hazard 1, 2,.. etc if you know of a few

Sounds like you have a battery problem not a Electronics Problem. First thing is to solve that. Also, you have to hold in the button to turn it on for a few seconds. More than once I thought I had a problem but simply did not hold the button long enough.