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Old 04-12-2016, 11:56 PM   #1
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Default Can running a chirp ducer out of the water cause damage?

I was on the telephone with a Garmin rep for about 30 minutes going over some questions. I had the 7610 on while he was talking me through setting adjustments. At about 30 minutes into the conversation, I asked the rep is there a way to turn off the transducer because I've read that the transducer can overheat not being submerged in water. He said yes, it needs to be turned off especially for chirp transducers. Rep never advised me from the beginning of the conversation to turn off the transducer.

I have a GT51 TH and it was on for at least 30 to 40 minutes. In this amount of time, will this cause damage to the transducer?
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Old 04-13-2016, 12:11 AM   #2
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I think that only 30 minutes would not harm it.
It is the 1kw 8 element , 2 kw 16 and 3 kw 24 element units that heat up faster etc. and need to be more concerned about.




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Last edited by semperfifishing; 04-15-2016 at 07:55 PM.
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Old 04-13-2016, 03:00 AM   #3
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It is claimed they overheat because the frequency is continuously swept not pulsed. So at 500 Watts it would heat up but whether a long time is required to cause damage rather than reduce life expectancy, is open to interpretation.
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Old 04-13-2016, 06:20 AM   #4
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My boat lives on a rack at the marina and I have the electronics on all day sometimes when I am working on the boat. I have not noticed any change in the performance of the transducer from this. GT51TH.
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Old 04-13-2016, 10:54 AM   #5
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Thanks guys, good to know.
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Old 04-13-2016, 08:24 PM   #6
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I was thinking about this at the boat today the GT51 also has a water temp sensor if the whole thing was overheating I think I would see an abnormal water temp reading while out of the water. When it is on the rack I have never noticed the water and air temp sensors to be different.
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Old 04-13-2016, 09:08 PM   #7
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its toast....just send it to me
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Old 04-15-2016, 03:11 PM   #8
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The potential overheating issue with otherís CHIRP transducers is NOT an issue with Garminís CHIRP transducers
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Old 04-15-2016, 06:52 PM   #9
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Interesting that Airmar include a disclaimer sheet stating that their Chirp transducers shouldn't be run out of water. The confusing aspect of this is the fact that the transducers have thermistors to determine whether the elements are overheating. The theory was that the transducer would then instruct the sounder to reduce power. Maybe this was just theory and not implemented. If so it is a shame as that seemed like an elegant solution.
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Old 04-15-2016, 07:25 PM   #10
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Heat is detrimental to all electrical items, why would you want to hear them up.
But perhaps some manufactures have built in idiot lites
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Old 04-15-2016, 07:30 PM   #11
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I have made it a habit to turn "transmit off" when I put the boat on the trailer due to the fact that sometimes when I turn the battery switch on, the 741xs turns on without anyone pushing the power button. A few time I noticed it was on for a while.
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