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Identified by model number JBLV750NXTBLU.

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Why is there a static sound on the left side of the headphones?

The head phones are fine when anc is not turned on. But when it's turned on, A hissing crackling sound with some ringing comes up. It sometimes happens when I tilt my head to my right. Any ideas on what the problem is and how I could fix it?

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i have this problem too , it is a factory defect, later the whole left side will be damage , i complained to the jbl help line they say htere is nothing they can do these unit are non repairable , i think these units are lemons only last for a year (warranty ) no good product may be hi tech in features but trust me they are not durable , lemon or they are defective as why the left speakers and why crackling sounds , they should recall all defective units and make a refund so wecan buy a better unit i am considering bose , sony if i get a refund , they know all about this but still continue to manufacture and sell , the units will be defective either you use it or not as the anc is defective and they pass the quality , realy this is a ripoff, a refund is justifiable hope we can reach out to others who have the same problem and so unlucky to buy this $@$*!& product because we trust the price and the name jbl. recommend other brand to your friends and blog your bad experience to inform others about jbl products

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I've had two different sets of these JBLs do the same thing. The first one was replaced under warranty but for the second set they refuse to even offer a repair option - just a 10% off coupon. What a load of garbage!

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I have had 3 750NC’s, all of them have ended up like this. I will no longer buy JBL products.

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Possibly a dead driver or a wiring issue.

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It is almost like there is dust in the internals of the headphones, for me at least. I am really happy with my headphones other than this.

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bryanchoo10 さん、ありがとうございました!
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