Ok i have a pirhanna2 fishfinder
sounder, shooting thru hull
, been mounted for a while since well before I bought the boat
it was working aok when I bought the boat but this year has been acting up. I figured it was slime on the bottom (mostly freshwater at the docks) so I grabbed the brush and scrubbed down there where the transducer was and viola it worked and started reading 18ft.
A few days later it was reading spotty, still is. I looked up the hummingbird site for help and figured out that if I take it off of auto and set it to the right range it will better aquire a lock on the bottom, which is true. Still spotty though, there are times it jumps in 20 ft of water
to 215ft, 150ft, 0ft, then back to 20ft, hairbrained to say the least when I have a 5 ft draught.
I scrubbed and scrubbed and scrubbed down there so much that I noticed I was starting to take paint
off and stopped but the problem prevails. No serious issues with water
where the transducer is mounted its almost always dry as a bone, maybe some moisture at best. The epoxy
its mounted to the hull
on has never been bothered since I got the boat, no accidental kicks or anything, its underneath the companionway
stairs going down so nothing has whacked it. (hummingbird says this problem can result from bubbles in the epoxy
sealing it to the hull).
Do transducers eventually just fail like this? I doubt it's the electronics
in the display as they seem to work just fine (theres no electronics
other than the tranducer and the display). There's already an old school
transducer mounted down there plus the one that's hooked up, I dont want to end up with three widgets expoxied to the hull
that I cant remove.
Maybe there's a way to fix it? I havent hauled out since I got the boat over a year ago but I've seen other guys at the YC go on the grid and other than a bit of slime the bottom of the boats were clean from a foot below the water so its not barnacles
or anything serious.
Suggestions welcome. Im in a channel with some nutty dry parts
and I dont want to run aground. Plus having an accurate sounding makes it easier to drop crab traps without guessing. Scrub some more?