The demonstration of electric currents, the common reasons for the sound, and the method of repairing are topical topics of our usual concern. The general display of current sound in the soundbox is that it is usually low-frequency noise, with continuous noise and a stable noise level. The frequency of electrical current noise in soundboxes is due to poor groundline noise and circulation, poor internal wiring and shielding strategies. The method of repairing the specific stereo with electrical currents can be seen with master man。
I. Electronic sounds in the voice
1. Continuous noise
It's usually low-frequency noise
3. The noise is quite stable
Ii. Reasons for electrical currents and methods of repairing sound
First of all, we're going to follow the steps of master man's platform to see the common cause of electrical currents in the stereo. Common reasons for the current sound in the soundbox include, inter alia, poor groundline noise and circulation; poor internal wiring and shielding strategies; power-based gill noise, i. E., communication sound; circuit board lines or local layouts; and, in more than half of the cases, non-location problems。
(i) five hot issues
1. Thermal noise may be addressed by replacing low noise components or reducing their load, which is also one of the effective methods。
2. In addition, there are computer soundboxes that are overrated and cause noise. This is due to the fact that the power of the output may be small and cannot be avoided by the large dynamic peak of the momentous music。
3. If the screws of a computer sound are not tightened and the reverse tube is not handled properly, mechanical noise is generated when large and dynamic music is played, which results in a current sound from the computer sound。
If the electrons are used for a longer period of time, the exposure between the metallic brush and the membrane may result from, inter alia, dust piles and wear and tear, and noise may arise when rotate。
5. It is also possible that a variety of situations may cause noise in the stereos, such as disturbance of the stereos, poor contact with interfaces or connections, poor quality of the stereos themselves, etc。
(ii) reasons for electromagnetic interference
1. Electric current sound in computer soundboxes
Dispersive electromagnetic wave interference, which is common in life, can be a source of interference for four things: soundbox wires, frequency splitrs, wireless devices or computer hosts. Keep the lead speaker as far away from the computer mainframe as possible and reduce the perimeter wireless device, subject to permitted conditions。
2. Reasons for power transformer interference
As a result of the magnetic leakage of the multimedia soundbox, the effect of the shielding of the transformer is very clear, as conditions permit, with maximum magnetic containment, which can only be made of iron material. We should try to select large brands with solid products, and the use of external transformers is a good solution。
(iii) other reasons for electrical currents in the soundbox
1. Speaker output end with an active soundbox input
The soundbox should be attached to the line-out end of the sound card, and its output was not magnified by the sound card and the noise was much smaller. Some soundcards rely on a spin-off resolution from a single output, line-out, or speaker, often by speaker, so they have to pull out the soundcard to adjust the jumper if needed。
2. Malformed card
The sound card was not closely separated from the main panel extension slot and there was a misalignment between the “gold fingers” on the visible sound card and the extension spring. This phenomenon is common in isa or pci cards, and it can be dealt with by using sound cards。
3. Computer speaker soundcard-driven procedure
You might be using a system-carried driver, or the driver has problems, if that is the case, a sound card driver。
(iv) final elimination methods
The internal welding points of the stereo are normally not problematic. What's most likely to be missing is the data lines that we're exposed to。
2. Most of the stereos have noises or electric currents caused by poor data lines。
3. Audio-line plugs are in the air for long periods of time and form an oxidized membrane, which is the main cause of the failure. The sound wire plugs can be wrapped in fine sand paper, and the outer oxidation layer can be removed by turning a few circles. Some oil was then applied to it, and it was purified with cloth。
The following are the common reasons for the current sound in the soundbox and the method of repairing it: when we find that there is current sound in the soundbox, we need to analyse rationally the reasons for it, look carefully at whether there is a heat problem, or because of electromagnetic interference, etc. More importantly, we need to master the method of repairing the stereo with electrical currents. If you want to know more about your home, please keep your eyes open on your home after the sale。
Reproduced for retention: http://www. Wanshifu. Com (teacher)
