what brand is it dave ? lowrance had a problem with the dual freq ducer -

how about interferance from ignition components (like those nice napa condensors )

is the transducer mounted behind a chine on the boat ? is it low enough ? lots of possibilities -- took me years to get it straight !!

Rick

I think it's an antique, made in Canada, need I say more, LOL.

Actually I think it's an old Hummingbird, where are you Dave, all these guys are trying to help and all they found is me and I'm no help at all.

John S.

LOL Yes it is an older hummingbird 200s? i think? transducer is mounted on the back Im a newbie so not sure what a "chime" is ? but yeah this is the first year we have a problem with it, It's a brand new battery we just put in at the beginning of the season, and the voltage seems ok? not quite sure maybe i should go get a Walmart "Frenchman's Special" and try that LOL Take CAre God Bless and Tight Lines LOL Donkey Dave From up North "The Backwards Frenchman" thanks for tips guys!!!!!!