Connect with us

TV static charge noise

Discussion in 'Electronic Repair' started by Marky, Apr 7, 2004.

Scroll to continue with content
  1. Marky

    Marky Guest

    Hi all, hopefully someone can shed some light into a tv problem I have. The
    problem is that when I change channel a noise is heard comming from inside
    the tv (not from speakers), this noise sounds the same as when the tv is
    switched on (sounds like static charge) and it lasts for about
    0.5-1.0seconds. This noise does not always occur, it also seems to make this
    noise (sometimes) during brightness changing from one scene to another.

    The tv is a 3 month old Metz Artos 82 Pro, is this noise normal operation of
    the tv? Does Extremely High Tension (EHT) have anything to do with this?
    The tv has V/H EHT compensation and many other settings.

    Thank you.
     
  2. James Sweet

    James Sweet Guest

    It's normal, the HV will change slightly with image brightness, causing the
    tube to charge up again when the brightness decreases.
     
  3. Marky

    Marky Guest

    I never heard it on my panasonic tv, are you saying that I should learn to
    ignore it and there is nothing that can be done about it?
     
  4. Jerry G.

    Jerry G. Guest

    There is probably some dust around the anode cap area, or somewhere on the
    CRT wall that is being effected by the slight high voltage shift when the
    screen suddenly goes from black to normal illumination. This dust is
    accumulating some charge, and is then is slightly discharged very quickly.
    This change of state is causing the air around it to shift, thus making that
    static noise you are hearing. I have seen this on a number of times in
    large CRT type sets. Infact, I have a set does this effect a little bit.

    --

    Greetings,

    Jerry Greenberg GLG Technologies GLG
    =========================================
    WebPage http://www.zoom-one.com
    Electronics http://www.zoom-one.com/electron.htm
    =========================================


    Hi all, hopefully someone can shed some light into a tv problem I have. The
    problem is that when I change channel a noise is heard comming from inside
    the tv (not from speakers), this noise sounds the same as when the tv is
    switched on (sounds like static charge) and it lasts for about
    0.5-1.0seconds. This noise does not always occur, it also seems to make this
    noise (sometimes) during brightness changing from one scene to another.

    The tv is a 3 month old Metz Artos 82 Pro, is this noise normal operation of
    the tv? Does Extremely High Tension (EHT) have anything to do with this?
    The tv has V/H EHT compensation and many other settings.

    Thank you.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-