I am having trouble with my Hummingbird 525. I can't replace it right now, but maybe someday!

Sometimes the locator goes crazy and changes within seconds from 36 feet to 0.8, then 2 feet, then 0.8, then 3 feet....etc. I don't know why it is doing this.

Is it possible that the transducer is bad? Any advice would be appreciated.

Thanks,
Peke