Old Salt wrote on Sep 20^th, 2014 at 3:19am:

Thanks PJ. Any way to tell if its the transducer?

It started with false reads and erratic changes in depth and temperature and the display would blink on and off from time to time.  I changed batteries, connections, etc... and nothing helped.  I too thought my unit was shot after 2 summers.  So, I brought it to my local Gander Mountain as it was still under warranty.  It was there where I learned about transducers and their shelf life in portable units.  I was skeptical but we put in a new one and it worked fine - for the next 2 years.  I estimate that I get probably 500 hours out of them (YMMV).  At that time, a new transducer ran about $45.  Now, you may as well buy a whole new unit.