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New TV / Loud whining sound from external speakers when turned off

Discussion in 'Electronic Repair' started by Vickie, May 12, 2007.

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  1. Vickie

    Vickie Guest

    I just bought a new Samsung 20" slimfit TV model tx-t2082.
    I hooked a pair of external HK695 Harmon Kardon speakers to the
    headphone jack, as I have always done with any of my televisions,
    because I really like how they sound without having a fancy hookup.
    (These are powered speakers, with a sub woofer and two satellites.)

    Aside from being less than impressed with the picture (some bowing and
    blurring in the corners) there's a very loud whining sound coming from
    the external speakers when I turn the unit off. It varies in
    intensity while it's off. When I turn the unit on the sound is
    normal.

    These speakers work fine in any other TV I've tried, and I've used
    them daily in my JVC TV that needs to go out for repair.

    Does this sound like something wrong with this specific unit or
    something inherent with the design of this particular model TV? I
    didn't hear any whining when listening with headphones.

    This model has a red light in the front that lights up when the unit
    it Off and is not lit when the TV is On. (Opposite of what I would
    have wanted.) Could this have anything to do with it?

    Thank you-
    Vickie
     
  2. JANA

    JANA Guest

    First of all, you bought a low end quality TV set. As far as making
    modifications to the set, it would not be feasible. Most of the lower cost
    models lack the refinements of a high end set.

    Try out the middle or upper end of the models from Sony, Panasonic, Hitachi,
    and JVC. You will find a big quality and performance difference.

    --

    JANA
    _____


    I just bought a new Samsung 20" slimfit TV model tx-t2082.
    I hooked a pair of external HK695 Harmon Kardon speakers to the
    headphone jack, as I have always done with any of my televisions,
    because I really like how they sound without having a fancy hookup.
    (These are powered speakers, with a sub woofer and two satellites.)

    Aside from being less than impressed with the picture (some bowing and
    blurring in the corners) there's a very loud whining sound coming from
    the external speakers when I turn the unit off. It varies in
    intensity while it's off. When I turn the unit on the sound is
    normal.

    These speakers work fine in any other TV I've tried, and I've used
    them daily in my JVC TV that needs to go out for repair.

    Does this sound like something wrong with this specific unit or
    something inherent with the design of this particular model TV? I
    didn't hear any whining when listening with headphones.

    This model has a red light in the front that lights up when the unit
    it Off and is not lit when the TV is On. (Opposite of what I would
    have wanted.) Could this have anything to do with it?

    Thank you-
    Vickie
     
  3. Vickie

    Vickie Guest

    I have no intentions of modifying any TV. Samsung was not my first
    choice, but I wanted a flat screen CRT TV, not a LCD or Plasma, and my
    choices were limited. This TV is in a bedroom and 20" is the maximum
    size, plus I wanted one with a headphone jack so I could use my HK695
    speakers, so it was JVC or Samsung. I bought a JVC first but found
    that the JVC site had misrepresented the model and some features
    listed were actually only on the larger models. (Features like BBE
    audio, which were on my previous JVC 20" and mysterisouly missing from
    the new model.) From what I could tell Sony and Panasonic were no
    longer making CRT TVs.

    I'm just trying to get an idea if exchanging the Samsung would improve
    the loud audio whine in the external speakers when I shut the TV off
    or whether it sounds as if there's something in the design of the
    model that would make an exchange a waste of time.

    Thank you-
    Vickie
     
  4. JANA

    JANA Guest

    Most all the lower end models of the price range or the CRT sets will have
    the problems you are describing. To put it simple, the scan amplifiers, and
    the power supply radiate some electromagnetic radiation. There is an added
    cost to design circuitry that will have a high degree of isolation for noise
    (Radio frequency or electromagnetic radiation) between them.

    With today's technology, I personaly would never buy a CRT set. You get a
    much better set with a much higher degree of performance for the cost in the
    LCD or Plasma types. You pay a little more, but it is worth the difference.

    --

    JANA
    _____


    I have no intentions of modifying any TV. Samsung was not my first
    choice, but I wanted a flat screen CRT TV, not a LCD or Plasma, and my
    choices were limited. This TV is in a bedroom and 20" is the maximum
    size, plus I wanted one with a headphone jack so I could use my HK695
    speakers, so it was JVC or Samsung. I bought a JVC first but found
    that the JVC site had misrepresented the model and some features
    listed were actually only on the larger models. (Features like BBE
    audio, which were on my previous JVC 20" and mysterisouly missing from
    the new model.) From what I could tell Sony and Panasonic were no
    longer making CRT TVs.

    I'm just trying to get an idea if exchanging the Samsung would improve
    the loud audio whine in the external speakers when I shut the TV off
    or whether it sounds as if there's something in the design of the
    model that would make an exchange a waste of time.

    Thank you-
    Vickie
     
  5. No LCD or Plasma gets near the performance of a good CRT. You've been
    conned by the advertisers.
     
  6. clifto

    clifto Guest

    JANA top-posted:
    When the set is off, you say.
     
  7. clifto

    clifto Guest

    Since in another article you mention the possibility of exchanging the set,
    I'd check with the store. Try this: plug headphones from a portable
    stereo into the set while it's off and see if you hear the whine through
    the headphones. If so, take them to the store where you bought the set
    and try a floor model.
     
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