I have a hummingbird hdr600 depth sounder and it dosent read all the time I can idle past a point one time and read 6' and the next time it reads nothing, I know Im in the same spot because of the gps. anyone else have this problem
To be honest with ya Mine died and I haven't replaced it because of the same kinda crap....never read the same from day to day in the same spot ..........
I am having the same problem and it started within months after I bought it.I will read the depth when coming off the trailer,till about 5 fet of water and then nothing. I believe it's the sender.Just never replaced.
My Dad had two different hummingbirds in two different boats and neither one worked at all. A friend of mine had one in his Formula and that didn't work either.
Who knows???
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