Samsung HLM5065W 50" Rear Projection HDTV-Ready Television Logo
Mike Kojima Posted on Oct 18, 2006
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High pitched noise coming from set.

My Samsung HLM5065W has a high pitched noise eminating from the set. This is independant of any channel signal or external device connected to the set. It also appears worse when first turned on. Although I haven't opened the set up yet, I suspect it may be a filament rattle on the bulb but it seems extremely high pitched and rich in harmonics compared to filament rattle I have heard before. Could it possibly be a fan or maybe the little DLP chip with the mirrors on it, which I have no idea what it is called. I cannot tell the primary frequency of the noise but it is a guess at around 7-15khz and 80-85db so it is quite evident and annoying. Thanks

  • Mike Kojima Oct 18, 2006

    Thank you very much. I will check the power supply. You are quite right, it does sound like a coil singing.
    Thanks again for the quick response.

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3 Answers

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Anonymous

Replease the color wheel

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  • Posted on Oct 18, 2006
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Only coils and transformers generate this high pitched noise,if you are familiar with tv service you can remove the back of your set and prove touching only the coils or transformers ,once you touch the right one the noise will stop and you can change it,a little pressure will change the tone or stop,use a wooden or rubber handle (not metal) but be careful because the set is going to be on,do not touch anything with your bare hands and stay away from high voltage.Let Us know how it goes or if you need more information.

  • Anonymous Oct 18, 2006

    Your rating response is also important.

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  • Master 3,130 Answers
  • Posted on Oct 18, 2006
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No my freind, without being there and looking around its a guess that the noise you hear is from the switching Power supply or SMPS(switch mode power supply. it could be an indication of something to come, as a breakdown as maybe the power supply is being a little bit overloaded for some reason, or could just be a loose transformer or coil winding. Not alot to do with it unnless you locate the source. i would contact Samsung and see if there are any problems like this for this model. If they dont know then the best advice im sorry to say is live with it or call in a tech to check out the power supply or to locate the singing coil. Good Luck PS please dont forget to rate this thread.

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When The TV is running it makes a high pitched whinning that seems to be coming from the projector

its a bad color wheel and you may be able to replace it. You Tube has videos for this.
Look where the lamp faces and see if wheel missing segments or shattered.
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hi there high pitched noise form the set indicates that one of the coils inside the set are lose this happens with age and heat the coils are made of copper and are tightly glued or soldered together and can be as small as a bit of hair of as big as a pen tip the problem is that the coil is now vibrating which is causing the high pitch sound and sound be quite easy to identify with a good ear!

sometimes these can be sorted with a quick bit of solder to hold it in place on the main bord of where the coil is, but some times there is no cure due to very small braiding of the copper wire any attempt to solder may cause damage and breakage,

You may be able to replace the coil with another one from a good components store with the same value best thing is to take out the noisy coil and take it down to be replaced

the reason it appears worse when first turn one is that the coil is cold and vibrates alot more just like when the set is warm the coil expands like most metals do which stops it vibrating so much

i hope this helps a little good luck

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You can tell to some extent what it may be by listening carefully and trying to identify the location. If you, remove the back cover of the set; stay away from danger, just listen to where it seems like the sound is coming from. If it is coming from inside the high voltage cage it is the flyback. If coming from around the main power transformer it is one of the power supply parts.

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The problem with them arcing is they can be doing damage to other components.

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According to the Samsung website: "The high pitched sound you hear is probably coming from the flyback transformer. The flyback transformer converts the relatively low voltage electricity that comes from the outlet in your home to the high voltage electricity needed to drive the cathode ray tube in your TV. It is not unusual for a flyback transformer to buzz softly when it operates. However, if the sound is loud and high pitched, it probably means the transformer is failing. To eliminate the sound, you will have to get your TV serviced."
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