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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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New TV / Loud whining sound from external speakers when turned off
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
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New TV / Loud whining sound from external speakers when turned off
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 _____ "Vickie" wrote in message ups.com... 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
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New TV / Loud whining sound from external speakers when turned off
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 On May 12, 2:43 am, "JANA" wrote: 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 _____ "Vickie" wrote in message ups.com... 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 |
#4
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New TV / Loud whining sound from external speakers when turned off
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 _____ "Vickie" wrote in message ups.com... 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 On May 12, 2:43 am, "JANA" wrote: 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 _____ "Vickie" wrote in message ups.com... 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 |
#5
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New TV / Loud whining sound from external speakers when turned off
In article ,
JANA wrote: 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. No LCD or Plasma gets near the performance of a good CRT. You've been conned by the advertisers. -- *If you ate pasta and anti-pasta, would you still be hungry? Dave Plowman London SW To e-mail, change noise into sound. |
#6
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New TV / Loud whining sound from external speakers when turned off
JANA top-posted:
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. When the set is off, you say. -- Boycott KFC http://www.telegraph.co.uk/news/main...10/nkfc110.xml |
#7
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New TV / Loud whining sound from external speakers when turned off
Vickie wrote:
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. 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. -- Boycott KFC http://www.telegraph.co.uk/news/main...10/nkfc110.xml |
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