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Lowrance LCX 26 - burning up transducers

Old 09-29-2008, 05:55 AM
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Default Lowrance LCX 26 - burning up transducers

On my third transducer this year. I noticed this spring the sonar picture had gotten really poor and had areas in the picture where it stopped recording ( a vertical blank would be shown, usually about 10% of the screen). I thought it might be a unit issue so I put it on a buddy's boat and picture was perfect.

I replaced the transducer and all was well the next time out but after a few trips it was back to the same. I replaced it again last month and all was well the first trip out - great detail and full screen pictures...I went Saturday again and it all started well then about lunchtime I looked down and saw another blank in the picture and though oh no. Sure enough more blanks started showing up and details became all fuzzy.

I had someone tell me they spoke to a Lowrance rep and he admitted their transducers were the weak link now especially on these high power units. Thought maybe he said they were being produced overseas and as they heated up the crystals went bad.

Curious if anyone else has had or heard of similar problems? At $65 a pop I do not want to keep buying transducers and going through the trouble of installing them. I am concerned it may be a unit problem causing this problem with the transducers - but again don't really want to do without my unit for a month or more this time a year to find out its just poor transducer quality.

Thanks.

FYI - transducer mounted outside, on the stern.
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Old 09-29-2008, 06:45 AM
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Default Re: Lowrance LCX 26 - burning up transducers

I have the 25C and a 26CHD with a single frequency transom mount to port and a dual frequency to starboard. No problems
so far but I will watch for this.

Sounds like a head unit problem.




Steve
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Old 09-29-2008, 07:51 AM
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Default Re: Lowrance LCX 26 - burning up transducers

Are you using the Lowrance "Skimmer" transducer? I've never heard of multiple failures of them, but I would suggest (as did TCM above) an Airmar P66. I've used both with my 26C and the Airmar provides more detail at a lower sensitivity setting, even at speed.

Mike
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Old 09-29-2008, 04:20 PM
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Default RE: Lowrance LCX 26 - burning up transducers

I have not had a problem with the transducer but my GPS module went out 3 weeks ago and I have been trying to deal with the astoundingly bad customer service at Lowrance to get a replacement. I have the 2000 module which I later found is famous for going out because they were not properly shielded. The Lowrance tech told me ...after a 30 plus minute wait to talk to someone...that I could replace with the 3000 and an adapter and that they were much better. I ordered that for 279.00 was told they would get it right out. Two days later I got an email telling me it was on back order for two weeks. I called back and after getting several messages saying if we are not answering it is because we are in a meeting or having bad weather, I finally talked to another tech who assured me they had 2000s in stock and would get one out right away. A week later I called to check and after a 30 plus minute wait got another incompetent tech who told me that the first tech had not entered the ship number so the unit was just siting there. I asked that they ship it overnight and was told they could not do that but would get it out right way and I would have it by no later than last Friday. I called to day to see where it was and was told it would be here next Thursday...another 6 days from the last promised date.
I checked with three dealers here when I first had the problem and all told me that they no longer sell Lowrance because their customer service is so bad. I also talked to their former distributor who told me they stopped representing them because they are so bad. I have had better service from India. I suggest they be avoided like the plague. I will never again buy one of their sorry products.
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Old 09-29-2008, 04:43 PM
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Default Re: Lowrance LCX 26 - burning up transducers

Yes skimmer....so the Airmar is interchangeable with the Lowrance transducer? How much are they $? and where to order? Willing to try that.

Just hoping its not the head unit somehow frying them but guess this would help answer that.
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Old 09-29-2008, 04:46 PM
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Default RE: Lowrance LCX 26 - burning up transducers

What's the RMS wattage for the LCX26 Lowrance. The Lowrance skimmer transducer is only rated for 600 RMS watts. So if the LCX 26 is 1KW . You will always be buying new transducers.
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Old 10-01-2008, 06:45 PM
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Default Re: Lowrance LCX 26 - burning up transducers

I just replaced my transducer for my LCX26hd it to would freeze up and not read bottom at any speed above 25mph
I called Jim at BOE he recomended the p66. i have used it two times now and seems to work good. I to wonder about it being rated at 600 watts how it will affect the performance
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Old 10-02-2008, 03:50 AM
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Default RE: Lowrance LCX 26 - burning up transducers

chavezm - 9/29/2008 6:46 PM

What's the RMS wattage for the LCX26 Lowrance. The Lowrance skimmer transducer is only rated for 600 RMS watts. So if the LCX 26 is 1KW . You will always be buying new transducers.
The Skimmer is the transducer recommended by Lowrance for the 26C. I used a Skimmer and a 26C and never had a problem.

Mike
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Old 10-09-2008, 12:10 AM
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Default Re: Lowrance LCX 26 - burning up transducers

All I have read is a maximum of 8000ws for the LCX 25 thru the LCX 113 I would think this is a peak output and that the
rms output would be significantly lower. If the entire unit is limited by a 3 amp fuse at say 17 volts (the highest recomended
voltage) that is only 51 watts. If you consider that the sonar signal is a short burst of a higher output in milliseconds of
duration the 600 w rms transducer is still sufficient. If the unit put out any where close to 600 ws rms continuous it would
need a 50 amp fuse on the input power cable. I would think 600ws rms is a lot of juice.



Steve
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Old 10-09-2008, 07:55 AM
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Default Re: Lowrance LCX 26 - burning up transducers

jenkinsph - 10/9/2008 2:10 AM

All I have read is a maximum of 8000ws for the LCX 25 thru the LCX 113 I would think this is a peak output and that the
rms output would be significantly lower. If the entire unit is limited by a 3 amp fuse at say 17 volts (the highest recomended
voltage) that is only 51 watts. If you consider that the sonar signal is a short burst of a higher output in milliseconds of
duration the 600 w rms transducer is still sufficient. If the unit put out any where close to 600 ws rms continuous it would
need a 50 amp fuse on the input power cable. I would think 600ws rms is a lot of juice.



Steve
Steve, that is not correct. You are confusing the continous input power rating, (currect draw), with sounder output power to the transducer. The output to the transducer is a series of short pulses ("on-time" transmitting, or 'sounding'), and "off-time" (listening for echo). The power for the duration of those pulses most certainly can be 600 watt rms, or higher.

Your radar works in a similar way, transmitting a much shorter burst of power (thousands of watts transmit power), then pulse turned off to listen for return.

Very high power ratings can be achieved for the short 'transmit time', without drawing hugh amounts of power from the mains.
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Old 10-09-2008, 08:12 PM
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Default Re: Lowrance LCX 26 - burning up transducers

CaptWill, reread my post carefully, the part about milleseconds of duration, the off time allows it to keep cool. The off time is much
greater than the on time. Sorry if I confused anyone.



Steve
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