Garmin 2006C Lost Depth Readout

[BayBum38ft]

I have a 2006C with a CSD20 sounder and an Airmar 744v through hull transducer. The depth readout has been working since I bought the boat and suddenly the depth froze on 5.7 feet and and now the readout shows 2 dashes, a dot and 1 dash. The water temp and speed readouts are normal. The sounder box shows a steady 1 second green flashing light. Any ideas or thoughts are appreciated.

Greg

[Larry3215]

Unplug every thing and look for loose, corroded connections or kinked, rubbed, broken, crushed cables, etc.

Is that a "shoot through" hull or one that sticks through a hole in the hull? If its shoot through, be sure its still attached well and/or still has fluid in the box if its that type. Check the connections at that end too if it has any.

Then try power cycle and factory reset.

[BayBum38ft]

CAn you explain a power cycle? Thank you for your input.

Greg

[Larry3215]

Power cycle = turn off, wait a bit, then turn on. Probably wont help in your case, but sometimes in the field it can fix things.

[BayBum38ft]

Garmin says the transducer is bad because the depth readout is gone, it does not show any fish symbols or bottom contour on the sonar page. Any thoughts?

[Larry3215]

Could be, but did you check the things I suggested?

You didnt say what kind of thru-hull transducer it was. If its an in-hull transducer and the mounting has come loose (no longer attached to the hull) or the fluid is gone, you will get the same results. Also, a broken wire or corroded connector can cause the same issues. Any of those things could be an easy fix.

[BayBum38ft]

Larry, yes I tried your suggestions,thank you, transducer is a through hull unit with a 2" hole through the hull and a fairing. On the GSD 20 sounder box the green light flashes for 1 second on and 1/2 second off which indicates a good connection to a 1 unit head-the 2006C. I checked all the wiring that I could access and I sprayed contact cleaner on the plugs. The sounder page only shows water temp and not any fish symbols or bottom contour.
Thanks again

[Larry3215]

If all the wiring looks good, then they are probably right that it is dead. Could still be a broken wire in the cable, but thats going to be hard to trace down.

Thats a pretty out dated unit. You going to up-grade the whole thing or try a new transducer?

[BayBum38ft]

A new Airmar B744V-6G that was recommended by Airmar is about $300 and then I still have an old unit so I will shop around and research a new unit. Thank you for your help.