Buzzing/humming sound from rear of TV unaffected by volume settin

Return tv to store for exchange or call Sansui customer service. They will arrange to exchange tv.

Tv have a colors wheel,hearing a humming or buzzing noises or black&white picture flashes with the picture,the colors wheel is dead.Hire a tv tech. to replaced the colors wheel,it pretty hard to replaced the colors wheel,because have to have take out alots of machanical parts,before even can come to the colors wheel itself to replace it.

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.

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

Hello
Welcome to fixya.
I'm Huuum and happy to assist you,


You said, your ice maker is making a buzzing or humming noise ice maker isn't making much ice. . fridge is about 2 1/2 years old.

This sounds like a clogged water line or a electrical short !
I would get service rather than take a chance on electrical fire.
Or burn up the circuit in the ice maker.


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Huuum
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The hum a fluorescent light makes is the 50 or 60 Hz hum of the alternating current mains supply. Inside the light fitting is a choke which when less than perfect tends to hum. When the choke is loose internally or externally is when the hum becomes an annoying buzz.

When an audio system has a similar tone of buzzing or humming the source will invariably be the same AC mains but how it got in there is difficult to answer...

It could possibly be poor smoothing and regulation of the power supply or an accidental hum loop caused by careless design and/or poor grounding. It could be caused by being induced in the input by connecting leads that are too long and poorly positioned/screened or it could be caused by mismatch between different components causing a poor signal-to-noise-ratio.

I am not sure why it should come and go but the fact it does would indicate a power supply problem more than the other possible causes.

If the Onkyo system has it's own volume control and it is being used witha tv or similar, it is worth trying to imporove things by turning up the tv volume to near maximum and then controlling the volume with the system control.

If what you mean is a low humming sound when the volume is turned down to minimum level, this is usually from power supply filtering problems. Most of the time this is from the electrolytic filter capacitors going out of spec with age and use, and or voltage retulation problems.

If the sound is quiet with the volume turned down, and the hum or buzz increases with the increase of the volume control, this is usualy due to a ground loop problem between the associated equipment connected to the amplifier, or a bad interconnect cable.


Jerry G.

You have a problem with EFM interference from a light that has a dimmer switch. Turn dimmer all the way up or off, buzzing will cease

That could be either the ballast, or colorwheel. Does the sound get louder at the rear of the tv or louder in front. let me know I may be able to help you.

Does the buzzing come from the speakers or the back...turn the volume down.. is it still there?