FF Humminbird 570 Problem

Used my FF, Humminbird 570, for one season and it worked great. Yak sat for 8 months and then I used it at the ARW event. FF would only read 5 ft. depth and no fish. The FF display sweeps and the controls seem to work.
I though that maybe the transducer had gapped from the hull. I pulled it, cleaned off the hull and transducer. Using a clear silicon adhesive I reattached it. Tried it at PIF. This time the display would only say 2 ft.
Humminbird just says send it in for service
Don't want to have to buy a new one for Albion
Have you had this happen on your FF?
Any advice on what might be wrong and how to fix it?

Thanks

Kirk

Used my FF, Humminbird 570, for one season and it worked great. Yak sat for 8 months and then I used it at the ARW event. FF would only read 5 ft. depth and no fish. The FF display sweeps and the controls seem to work.
I though that maybe the transducer had gapped from the hull. I pulled it, cleaned off the hull and transducer. Using a clear silicon adhesive I reattached it. Tried it at PIF. This time the display would only say 2 ft.
Humminbird just says send it in for service
Don't want to have to buy a new one for Albion
Have you had this happen on your FF?
Any advice on what might be wrong and how to fix it?

Thanks

Kirk

I had this problem on CUDA later on found out it was just loose connection on the cables, pressed is harder and used the electronic grease works fine...