Odd depth sounder behavior - SailNet Community

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Old 06-24-2009
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Odd depth sounder behavior

Hi,

I have a horizon depth sounder on my boat. Not sure of the model unfortunately. Last year it worked wonderfully, no problems. This year, I seem to be experiencing an odd problem with it. It doesn't seem to show the actual depth, and the actual depth seems to have no bearing on what is displayed. It seems to start at around 2-3 ft deep (scared the crap outta me, cause I was in an unfamiliar river, and I draw 5 ft) and slowly increases by about .1 feet every 2-3 seconds. Never faster, never slower. it seems to reset itself back to 2-3 ft once it gets a bit past 40ft. Nothings changed since last year that would affect it as far as I know, so this really has me stumped. Anyone have any ideas?

Thanks!!!
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Old 06-24-2009
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Email Tim Johnson at t.johnson@vxstdusa.com and explain the situation to him. Standard Horizon will look at your depth sounder to see if it's repairable and fix it for a fixed fee of $65, shipping not included. He's given me great customer service in the past on my old Standard Horizon depth sounder, and I know he'll do what he can for you.

Good luck!
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Old 06-24-2009
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If you have a shoot through the hull type and it is encased in mineral oil. it may have leaked causing a bubble between the hull and transducer causing it to fluxuate depending on the roll of the boat.
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Quote:
Originally Posted by jaschrumpf View Post
Email Tim Johnson at t.johnson@vxstdusa.com and explain the situation to him. Standard Horizon will look at your depth sounder to see if it's repairable and fix it for a fixed fee of $65, shipping not included. He's given me great customer service in the past on my old Standard Horizon depth sounder, and I know he'll do what he can for you.

Good luck!
Thanks! I've sent him off an email. Hopefully he'll know more

Quote:
Originally Posted by badsanta View Post
If you have a shoot through the hull type and it is encased in mineral oil. it may have leaked causing a bubble between the hull and transducer causing it to fluxuate depending on the roll of the boat.
By shoot through the hull type you mean no through-hull? In that case I don't have one of those, mine goes through the hull. I would think something like that would cause erratic readings though no? Mine are steady. It doesn't fluctuate at all, aside from the steady slow increase in depth shown (about .1ft every 2-3 seconds)

Thanks!
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Old 06-24-2009
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Me too!

Mine is an older one that was acting similarly. I tried to replace the transducer [thru hull] and instrument with something else but they were all too small. I called Standard Horizon and a tech told me the SH transducers were interchangeable. I took a chance and bought a new one on ebay.[$50 dollars] It works perfectly! And I learned [thanks to a label on the transducer] that you never, ever clean a transducer w acetone! That will kill them. This may have been responsible for my old ones demise.
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Old 06-24-2009
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My West Marine unit (made by Standard Horizon) will occcasionally show a very low depth when I know I have plenty of water. Seems to be an issue early in the season - I believe it thinks the thermocline layer is the bottom. The software in the newer units seems to better at this.
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Old 06-24-2009
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My Raymarine St60 depth will show random shallow water while in deep water 80+ft. I was following another boat that also reported the same experience. It was a large school of fish, nothing wrong with the equipment.
I use a chartplotter and lake chart to know where I am so I dont flip out with an unecessary fire drill.
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Mine has acted odd ever since I painted over the transducer...d'oh!!!

Acting better (not perfect) since I've sanded the paint off.

Live and learn....good thing I'm not a pilot!!!
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