PC Speaker common fault investigation and maintenance of skills
PC Speaker common fault investigation and maintenance of skills
The rookie-level users, the fear most is the product of the problem, what problems require, it is extremely depressing. But
very often are their own fault can be resolved, the following 52 hardware User Forum on compiling a few common solutions to
the failure to satisfy the users.
Perhaps after reading you will find that they have become masters of the speaker.
The rookie-level users, the fear most is the product of the problem, what problems require, it is extremely depressing.
But very often are their own fault can be resolved, the following 52 hardware User Forum on compiling a few common solutions
to the failure to satisfy the users. Perhaps after reading you will find that they have become masters of the speaker.
1. Voices to the normal player, but from time to time of the reported “Pi miles Bala” noise.
Reflect the use of computers, headsets, no other noises, only occasional use of the speaker will issue a “Pi miles Bala”
noise, sometimes longer time, sometimes shorter time, then normal. At first audio signal is also suspected to plug contacts
bad, but it also re-plug that Huanguo line did not solve the problem. However, the Speaker to hold companies, for a two-day
trial, but has found no problems. Comparing the differences before and after, the only outlet not the same. At this time I
think of my desk on the outlet, because the poor quality, access is not strong, while strong, while weak, leading to the lamp
while bright, while dark. It seems that the client is reflected in the case, the reason is because the outlet of poor
quality, use within the Lintong-poor quality, poor flexibility. After prolonged use lead to poor contact, while contact,
while disconnect, then Speaker of power on a moment-and one-off. Because there are large-capacity power supply filter
capacitor, leading to the amplifier circuit for a high-voltage power supply, will be lower, there is strong or weak voice of
change at the same time, because in an instant on-off the flow of electricity will be off the interference Cuanru signal
amplifier, can lead to other noise.
The solution: replace the excellent quality of the outlet. Some unscrupulous merchants will use customers may be unaware
of the reasons, to take this on to the customer presentations, the speakers were repaired, and take the money.
2. Voices to the normal player, but if you adjust bass (BASS), the speaker will be reported when the “Thunderbolt para”
noise, simply can not tolerate.
Sometimes, when used in a number of speakers will be “Thunderbolt para” noise, especially when the rotation bass knob,
the situation will become more serious. Because it is caused by rotary knob BASS, BASS is certainly potential for damage.
Most of the speakers and bass volume control regulation, using the potential to change the signal for the strength, in
addition to the new digital mixer potentiometers. Is the potential for contact through a change in the activities of carbon-
chip resistance to change the location of the size of resistance values. With the use of time for the growth potential will
be inside or impurities into the dust, the potential for contact may also be of rust, caused by contact with false, then
adjust the volume is in there will be “Thunderbolt鍟暒”the noise there. For this very simple problem to deal with the sound,
the replacement of the potential for a new can, and will not spend the money over two yuan. However, the simplest approach is
to open the case, the potential for pressure to the back of four-opened, under the most potential for the activities of
contact with ethanol cleansing carbon-resistance, and resistance in the carbon - Di You drop one of the potential for good
with the original location can resolve the noise problem. But in this case because the potential for instability in the
quality of the use, the channel around the reed was originally isolated, but now because of dislocation, resulting in the use
of the time when the off-time, on the ” Perak para “noise. As long as we use Jianzui tweezers are pulling gently, and then
installed in situ to it. If the volume is adjusted when a similar noise, this method can also be repaired.
3. Voices of normal play, but the sound of a loudspeaker, a voice on the loudspeaker. If forced Bai hand to the side of
the volume potential, then the two channels on the volume as large.
This second case fault similar, but also the volume of the potential for problems. Because the volume of potential for
left and right are separate. Reed use of time because for too long, inside the elastic weak reed, can not come into close
contact with the carbon resistance. Finally directly to the potential for a total end to connectivity, troubleshooting.
4. Speakers to open the power switch, the speaker did not normal start-up, “Bang” out of the startup sound. Open MP3 player,
adjust the volume, the speakers do not have any voice.
Such failures more common, the boot after speaker silent. How do we judge the speaker is really bad? 禄 First, the power
to the speaker before, the potential volume of goods to the largest rotary position, the power switch in the open, pay
attention to whether the speaker “Bang” out. If so, the speaker did not note any problems, power is good, silent may be sound
card driver error or sound failure, may also be muted or the volume is too small, the addition is no signal Plug Plug good,
or signal lines disconnected. There is, if we signal line plug contacts the metal parts of the chassis, the speaker will be
reported “humming” sound exchanges, especially obvious.
However, this case is because the speaker used for too long, the internal temperature is too high, the speaker of the
temperature inside the power transformer fuse insurance. Do not worry, we do not have to replace power transformers, as long
as carefully remove the transformer, observed from the outside power transformer primary (that is, to 220 V, that one end) to
see which side is convex. On the side of the convex point, with a pointed tweezers to break the surface of the plastic film,
will find that there is a written “250 V2A” the word of the small white box, which is the temperature insurance resistance.
Because the time is too long, transformers the temperature is too high, in order to provide the avoidance of fire, insurance
resistance movement to cut off the current supply. As long as we have this insurance at both ends of the resistance can be a
direct short circuit, but in the future need to pay attention to the use of heat, do not use the time for too long.
Many use the power transformer computer peripherals, such as CANON and HP inkjet printers using an external power
supply, an external modem to use the power adapter, some speakers used the external power supply, Xiang Tinei the 220 V/9V or
12 V transformer, Coil within the insurance have added a temperature resistance. In particular, CANON and HP printer with the
power transformer it is difficult to, or maintenance fees were also high, but the actual maintenance is the opening of the
transformer, according to the above method to the insurance can be a short-circuit.
5. Sounds, but only treble, but no bass.
This failure is generally because the speaker sound excessive, prolonged use of the Let’s peacetime often said that the
subwoofer to burn, may also be Xiantou broken. As long as 10 to spend the money to replace a few pieces of a new on it.
6. Sounds, but the sound is not clear, Ting Buqing specific content.
Apart from the failure of such damage loudspeakers, may also signal fault line, or treble damages to enlarge the
integrated block. Note: If you use a soft sound card, because sometimes inadvertently changed the settings due to the speaker
pronunciation, women can only listen carefully to the sound, the sound man can not Listen.
7. A boot, “humming” sound straight, no matter how adjust the volume, noise can not eliminate.
This situation usually because prolonged use, coupled with the speaker is closed, no heat, scattered out, the internal
temperature is too high, causing damage to power amplifier integrated block overheating. In fact, authentic amplifier
integrated circuits are a function of temperature protection, when overheated, the amplifier output of integrated circuits
will be automatically stopped when the temperature down, can automatically resume work. However, some speakers manufacturers
to reduce production costs, not using the big brand-name manufacturers of integrated circuits, using a number of small
factories imitation of integrated circuits, poor quality. The solution is to buy a method with models of integrated circuits
can be replaced, but cost money 5.
8. Gangkai machines, computers play a sound all normal, but the use of a period of time, “humming” sound straight, the
ears can not tolerate.
Ditto with this case of failure, but the power amplifier integrated circuits has not completely damaged, when the
overheating when the failure. We can open the case, by increasing the bulk-power amplifier integrated circuits to solve the
area, can also replace the excellent quality of the film.
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