Earpiece vibrating & heating

My plantronics640 earpiece starts vibrating when I try to charge it then sometimes when its not charging it gets very hot when I haven't had it to my ear & wont stay charge that long. I don't have the manual for it anymore.

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Do you know if the codes of the headsets are the same i lost mine and i need help

Posted on Aug 24, 2007

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Discovery 640 Wireless Headset

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How do i get the red light to show that the earpiece is charging

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Default pairing code... plantronics 640

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Be the first to answer Nov 16, 2009 • Plantronics Discovery 640 Wireless Headset

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no sound from my plantronics 640 earpiece? hi- for some reason my ear piece~ plantronics 640 sound disappeared? i thought maybe i did not charge it completely so recharged it. that doesnt seem to be the problem. shut it down as well as phone... to no avail? has it met its last day? have you heard if this has happened to anyone else. its several yrs old now.

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Be the first to answer Dec 07, 2017 • Plantronics Discovery 640 Wireless Headset

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Earpiece vibrating & heating