Uniden Depth Finder Problem

My 2000 Mobius has a Uniden depth finder that has worked fine up until this past weekend. It was then that I noticed it was flashing 0.5 continuously. Do the transducers just quit working sometime? Any ideas what could cause this problem?

Jman

Exact same problem happened on my 03 a few weeks ago, I have been through the owners manual, google, etc. Hopefully someone here can help us.

There is a sensitivity dial on the back of the gauge. Try tweaking that a bit.

I've spent the last couple of weeks working on and getting familiar with my Uniden depth finder as mine was having the same problem. If you have a "through-hull" transducer I'm less help. If you have an "inside the hull" transducer then try the following:

First, check to make sure that the transducer is firmly secured to the hull of your boat. This was my problem - the transducer had come loose. My dealer recommended 3M 5200 Marine Adhesive (Home Depot, $6) rather than epoxy. When you glue it back on, make sure that any prior adhesive, dirt, etc. is gone. Clean the area with something that will remove grease, etc., I used acetone and make sure that the bonding area is smooth.

Second, my transducer was not the solid "hockey puck" style but instead an Airmar P79 transducer something like this: http://www.airmartechnology.com/airmar2005/ex20/RMProducts/ElectCat.asp?ProdID=52&Man=All&PageNo=99 You have to fill the plastic reservior with "liquid" which either mineral oil or automotive radiator coolant (I chose coolant). Specific instructions for my installation is here: http://www.airmartechnology.com/uploads/installguide/17-217-01.pdf Other models, check here, but even if you have a different transducer manufacturer the installation descriptions will be helpful: http://www.airmartechnology.com/airmar2005/ex20/RMProducts/RMMain.asp?LinkID=2&NewID=

Hope that helps.


Some helpful info:

http://www.tomneale.com/tips13.html

more likely it is the tranducer "liquid" has leaked out...i had one just like that P79, i used mineral oil, transducer was installed using a little grinder to sand the area smooth and clean and epoxyed on...somehow it would leak out, i tried sealing it etc. but I suspected it might be getting out past the o ring, so it became an item i had to service to use, i had to keep filling it with the mineral oil...finally i just put water in it...and sold the boat!

Wow, I went home and looked at my depth finder and it is a Lowrance 3500, not a Uniden.