PWM noise from backlight

PWM noise from backlight

TechTablets › Forums › Chuwi Forums › Chuwi Hi12 Forum › PWM noise from backlight

Viewing 7 posts - 1 through 7 (of 7 total)
  • Author
    Posts
  • April 7, 2016 at 7:38 am #32356
    Kévin
    Participant
    • Posts: 14

    My tablet makes noise only à 25% ,  it’s very curious, this is not very disturbing for me ….

    April 7, 2016 at 8:42 am #32372
    Rene
    Participant
    • Posts: 62

    When using it in a relative dark enviroment, i like to run mine at 7-9 percent. It makes this noise too. Very annoying.

    April 7, 2016 at 10:07 am #32414
    Anonymous
    Inactive
    • Posts: 65

    Ah! So I’m not the only one…

    Could you please give my your serial number?

    April 7, 2016 at 4:14 pm #32488
    Rogus Mortem
    Participant
    • Posts: 112

    I’m running mine at 15% with no noise!

    April 7, 2016 at 7:08 pm #32537
    Anonymous
    Inactive
    • Posts: 65
    Rogus Mortem wrote:

    I’m running mine at 15% with no noise!

    What is your serial number? And I have to say its a very high frequency noise, so kind of depends on how well your ears still work(my girlfriend hears it, but my father doesn’t)

    April 7, 2016 at 10:47 pm #32596
    Rogus Mortem
    Participant
    • Posts: 112

    Q64G45160100755

    April 9, 2016 at 9:31 pm #32848
    Anonymous
    Inactive
    • Posts: 65

    Your serial number is a lot different, so it’s not a batch problem I think. I am going to try and test the tablet with an external hard drive because I think it is maybe related to power management. I just think it’s strange that the tablets creates noise between about 0% and 25%. If it was pwm noise for brightness control I think we should hear it to at 50% for example.

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