Question about Panasonic TH-50PX60U 50 in. Plasma HDTV

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Humming/buzzing sound my new 50 inch pano is making me crazy. Always humming and byzzing extremely loud. Is this normal for plasmas or is there something I can do to fix this problem. At first I thought it may have been the high def signal, but now it seems so random and loud. Please any info can help

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Re: humming/buzzing sound

A buzzing sound in a plasma could be becuase you live at a higher altitude. This is an issue with plasmas only.

Posted on Dec 07, 2007

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Re: humming/buzzing sound

We usually find this is the cabinet back rattling. To confirm, when this happens turn the volume on the set all the way down and see if the problem is still there. If it is still there the put your hand on the back of the tv and gently press to see if the buzzing goes away. If the sound does go away the cure is to loosen all of the back cabinet screws around the edges of the set and gently push on the back as you tighten the screw. tighten the screw in an order much like you would tighten the lug nuts on a tire. in other words thighten the top left screw, then the bottom right screw and kepp alternating as yougo around the dabinet back untill they are all tight.

Posted on Nov 29, 2007

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I have a 42 inch Hitachi plasma tv that is making a very loud static noice coming from the internal speakers. It stays at a contstant very loud volume unless I completly mute the tv or turn the volum

Based on what you have tried if a buzz or loud static via the speakers you have something wrong in the audio output circuit of the set--problem here is that circuit may be part of the Main board that processes all signal---a look inside---following the speaker leads back would lead you to that board.

A simple thing to do to narrow it a little (you may have done this) is with sound all the way off put your ear to the internal speaker--hear anything at all like a deep hum?

Depending on age of set and cost of the board likely bad it may or may not be a do it yourself repair.


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Loud buzzing sound,

There are a couple of possibilities. There are some styles of TV's which have lightbulbs which project light from the back of the TV. These are big TV's but are not Plasma's.
The bulb will be behind a small square or rectangle door and can be held shut with a screw or several screws. You can get the parts Online. You do not touch the bulb without gloves or a rag. A fingerprint will make a hot spot and destroy a new bulb.

There is no adjustment with a new bulb, so they are plug and play. The buzzing is the bulb arcing. The second possibility is a meltdown in a power transformer or capacitor. The video and audio are 2 separate systems to a certain point and that is why one can work and the other can be bad.

I would do a Web search using your Make and Model and look for bulbs and Consumer complaints.

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Hi, I Purchased an LG 50PK350 plasma tv and I am experiencing an extremely loud, annoying buzzing sound even with the amp switched off & the sound muted. The buzzing is not constant ... the brighter...

I have this tv aswell, and yes I will confirm that it does buzz quite alot, but all plasma tvs do, it is to do with how it renders images, the buzzing can be made worse by it being close to a wall and it reflecting back. I found that my tv stand some how amplified the buzzing when i got mine. I dont think its something you can escape.

Mine i notice also when scrolling around menus seems to have lines that follow your selection....not to pleased about that

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Humming sound

Samsung states - A buzzing sound from your plasma TV is normal. It is caused by the electrical charges used to create the images on the screen. The buzzing, however, should not be so loud that you can hear it when the volume on the TV is set at normal levels.It is also important to determine the type of buzzing sound. A sound like a ground hum is completely normal. This buzzing can originate near the power cord connection or from the SMPS board position on the upper back of the TV. The buzz will be more audible as contrast increases on the screen, most notably when displaying an all white screen. If the buzzing sound is loud, you may have the Contrast set too high. Lower the contrast to reduce or eliminate the buzzing.You may also have loud buzzing if the rear of your Plasma TV is too close to a wall or other hard surface. Try moving your TV away from the wall until the buzzing is minimized. [1]
If the buzzing is at a higher frequency and resembles a crackling sound (like the sound of Velcro being pulled apart), and originates from the upper middle back of the TV, you likely have a failing SMPS board. Place a support call with Samsung to have the SMPS board replaced.FP-T5084 Have a known buzzing problem with a very simple fix.If the buzzing is coming from the left or right sides of the rear and the volume can be changed by pressing lightly on those locations, you are probably hearing the vibration of the grounding springs on the back panel. Call Samsung (or whoever) and have a technician confirm the problem. The easiest fix is to insulate the offending spring by applying some felt tape.

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have someone check speaker ground to the TV chassis. Your speakers are picking up reverb from the Video Signal.

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Samsung Plasma has crack on INSIDE of screen- i

If you have no warranty, you have no options. Even if you did, most manufacturers will not cover physical damage. The cost of replacing the panel which is what would be necessary.


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You have a cracked panel and the gasses inside have escaped. The buzzing noize you are hearing the the current flowing throught the panel. It will be cheaper buying a new TV than buying a replacement panel. But if u wanna check out the price look up your model on

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Most times a humming noise in a Plasma tv is associated with high altitude. If you live over 3500 ft. and when you first turn on the unit is has a slight buzz and it gets worse as it warms up then you have what is referred to as high altitude sickness. You shoul contact the manufacture with this problem and the should exchange the unit with one tested for proper operation at high altitude. If you do not live at high altitude then there is a problem in the unit that should be diagnosed.

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The noise is caused by dust on one of the toroidal transformers(usually a round looking thing with wire wound around it). Go to the back of your television and try and pinpoint were the sound is coming from. Turn your television off and blow it out with compressed air if it is close to air vents in the television. If you cant see it you might have to open your television back panel.

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