High pitched noise coming from the speakers

Hello there!
Sometimes High pitching its just that, static on the area, like if you are near a microwave, or near other electronic equipments, but, if the skreetching sound keep going or even if you do nothing it could be a line inside the sound card, or you need to clean the volume botton with special electrical cleaner. other that these, its contacts, or bad cap for the volume board inside.
Good Luck!
Carl

Unusual noises coming from your computer can mean anything from serious trouble to no problems at all. The uncertainty, together with the expense of computer hardware components -- not to mention the risk of losing data and being without your computer -- make it important for you to investigate any unusual sounds as soon as they come to your attention.

Normal Sounds
Not every high-pitched sound coming from your computer suggests a problem. Computers also generate a variety of sounds as part of their normal operation. In particular, anything that spins can easily make noise. This includes cooling fans and the hard drive. In the case of fans, their sound sometimes grows louder when the computer works harder because it needs to run the fans at a faster speed in order to dissipate the extra heat from the higher level of operation. You probably don't need to concern yourself with an unknown high-pitched sound unless you have used the computer for a while and the sound is new. b> Capacitors Capacitors sometimes make a high-pitched buzzing sound, either when under a high load or when defective. In the latter case, faulty construction can cause gas to build up inside the capacitor, which then vents under pressure and sometimes creates an audible noise. Defective capacitors can damage or destroy other hardware. f you suspect a bad capacitor, or don't know what else it might be, give your computer an inspection. b> Capacitors Inspection b> Your computer has capacitors all over it, including on the motherboard and on nearly everything that plugs into the motherboard, so tracking down a bad capacitor can take some time -- especially if you don't know whether a capacitor is actually causing the problem. Many capacitors look like tiny little soda cans and smaller ones look like squat cylinders. Failed capacitors usually bulge out at the top or have crusty residue around them. Be sure to check not just the motherboard but also any other hardware components with visible capacitors on them. If you find a bad capacitor, keep looking in case you find more. Afterward, don't use your computer again until you repair or replace the faulty hardware. Fans b> The bearings and motors on fans sometimes go bad. If this happens then the fan may begin to whine, whether or not it stops working. If feasible, open the side panel of your computer tower with the system running and try to pinpoint the exact source of the sound. If you can determine that the noise is coming from a fan, power down the computer and replace that fan. b> Power Supply Unit b> Power supply units sometimes make a high-pitched whining or droning sound; it can happen continuously, when you perform certain tasks on the computer or when you take the power load high enough. This can happen either because of cheap construction or because the unit is too close to maximum capacity. As you would do to check the fans, open the side panel while the computer is running and put your ear up to the PSU. If this is where the noise is coming from, replace the unit with a high-quality model and upgrade to a higher power output if you need to do so. Hope this helps.

Could be an alternator problem. Bad ground wire or just old bad wiring.
If you have an amp then the power wire is to close to the speaker wire.

you may need to use a power line noise reducer or if useing amps a rca line noise reducer

check your wires if they are too near some big power wires and move them away from these high powered wires or check your grounds and make sure its a good ground by scrapping the connection until bare metal. Also its a possibility rca's or wires are getting pinched or not fully connected.

The right speaker is not tighly connected. Check for
loose connection at the terminals, that causes to oscillate (high noise)

A high pitch noise comes normally from blown capacitors from the motherboard or the power supply. But mostly high pitch noise comes from power supplies.

You could have to open up the power supply to see them.

Verify if it is the case and replace the faulty part.

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.

Please Rate This Fixya solution

the high pitch noise is from the HV. arcing acrss each other.
( the screen comes up at a pop).
I suggest get a better one. ( sorry! no domastic brand).

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."