1. gameson's Avatar
    Mine does, and I only use OEM charger. I tried using Apple iPhone (1A) charger, then Blackberry (0.75 A) charger, both produces hissing sound. I have not yet tried the OEM Asus charger because I have too many charger, and also because Asus charger is output 5.2 V (while all my other chargers output at 5V), so I don't want my Asus charger to get mixed up and used to charge on other devices due to this, but I will try it later.

    The N7 is still charging though. No issue other than the hissing sound.

    From google, it says that it maybe due to interference or bad grounding. since my iPhone does not produce hissing sound when charging iPhone and so does BB, I can say 99% it is not charger issue, but it's N7 issue.

    If it's bad grounding circuit, that's kinda sucks. How can the tab passes QC like this?

    Any input is appreciated.

    12-01-2013 01:47 AM
  2. Brian Low's Avatar
    Nope. Both of mine don't hiss at all. What i do find interesting is that my OEM charger hisses when its plugged into a wall and gets EXTREMELY hot. Stopped using it because i'm afraid it'd blow my device up.
    12-01-2013 02:47 AM
  3. gameson's Avatar
    the hissing noise comes from the N7 speaker (the top speaker, the one on the opposite side of the USB port), not from charger. That's why I suspect my N7 may have interference or bad ground.
    12-01-2013 03:37 AM
  4. thatguy97's Avatar
    Idk if this is true people would have already knew about this since its release in July 2013

    Sent from my Nexus 7 2013
    12-01-2013 08:13 PM
  5. mitc5502's Avatar
    Mine does it, but from what I can tell it's worst when it's fully charged. I had a spare charger from another phone and now use that without issue.

    Sent from my iPhone using Tapatalk
    12-01-2013 08:39 PM
  6. gabbott's Avatar
    Have 3 original nexus 7s and 3 2013 nexus 7s and none of them make a noise when charging. Sounds like an issue with the charging unit.

    Posted via Android Central App
    12-01-2013 08:45 PM

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