Advice 1: How to fix sound on computer

The reasons that the computer no sound or it's bad, often very simple and easy to handle. But the possible reasons are many, and this is the complexity of the fix sound. Do not be surprised that then you will be asked to check the really simple things, but also experienced users can sometimes be that it takes a long time to troubleshoot because it's not what there looking for.
How to fix sound on computer
Check the connections of the speakers (headphones) to the line output of the sound card. The cable should be inserted into the green Jack. Check the audio device, replacing it with another. If it is active speakers, make sure they are included.
The next step is to check the system settings. Consider the example of Windows XP. Open control panel and run "Sounds and audio devices". Open the tab "Audio". Click the "Volume" and make sure that the engines are "General" and "Sound" is raised high enough, and the adjustments of the balance above them are in the middle. Click the "settings" button and select the type of device that suits your.
Click the "Volume" and make sure that the engine is "Volume mixer" is shifted far enough to the right. Check that about "mute" was not checked. Click "speaker Volume" and see that both engine have been shifted far enough to the right.
Return to the control panel. Select administrative tools = > computer Management = > device Manager". Click to expand the branch "Sound, video and game controllers" and verify that your sound card is listed. If not, skip to step 6.
Select your sound card and then right-click to display the menu. Click on "Properties". The device status should be "this Device is working properly". If not, go to step 6. Make sure that at the bottom where you see a "device usage", selected "use This device".
If you have gotten to this point, most likely you have not installed or improperly installed sound card driver. In the case with a sound card built into the motherboard, plug in the computer the installer CD from your motherboard and reinstall the sound card driver. If there is a suspicion that this drive no nothing installed, and happens install all drivers. If the sound card is external, reinstall driver from disk which comes with it.
In the case of an external sound card possible contamination of the contacts. To check, turn off the computer, remove the cover, pull out the external sound card plugs (speaker and microphone), remove the retaining screw, remove the card from the slot, clean the contacts with a soft eraser. Follow the procedure in reverse to connect the card.
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If none of the above helped, so we have to take the computer to a service center or to work with a PC without sound.

Advice 2: How to fix headphones

Advice 3: How to fix the microphone

Modern people without phones feel not comfortable, even if they almost never use.

However, the permanent contact with technology requires us to some new knowledge. That is, if you want to use technology, be prepared for the fact that you will need to learn how to do the basic repairs of their machines. The problem faced very often, it is a violation of the microphones in phones, headsets and microphones to computers. Note that to fix the microphone as a rule, not difficult, repair is elementary. However, most often we lose time, money and nerves to carry the microphone in the Studio.

There are three common problems that put the microphone down. If we consider the problem carefully, it can be solved independently.

  1. The microphone loses sensitivity because of clogging. Dust, microparticles of the skin, the COP gets on zvukousilitel head and that loses its properties. To fix the microphone in this case, need wool alcohol and a screwdriver. You need to release the microphone. To do this, sometimes you need to spin the phone or remove the cover with it. Then dip the cotton wool in alcohol and very carefully remove the plaque from the head. Keep the wool left on it. Let the alcohol evaporate and set the microphone back.

  2. The microphone loses sensitivity due to moisture. Sometimes between the gasket and the head is delayed condensation. Usually, the head does not rust, but the moisture does the job. You need again to release the head and to warm it under a lamp. If there are pads, the same should do and take off.

  3. The microphone fails due to rupture of the incoming wire. There are two options – change, or soldering. To apply them you need based on the specific situation. Phones, often need to solder the broken wire. With headphones, there are situations of violation of the wire in multiple places, then it's better to change everything.

If the problem is serious change the whole unit, especially when it comes to the phone. As for the set, then it is better to just replace it completely.

Advice 4: How to fix speakers

Each of us appreciates and loves his stereo system. And the most unpleasant when you go down one column. To change all the acoustics don't want to, but no one in the column effect is not the same. Well in this case you need to take a soldering iron, a screwdriver and start fixing them refuse to work part of the system.
How to fix speakers

Most often the problem lies in the heart of the column, in its dynamics. To fix column defect dynamics, we need to know what it is. Options may be several:

  • condensation on the membrane;

  • debris between the magnet and the coil;

  • the impulse wires to the diffuser;

  • demagnetization of the magnets;

  • the state of the membrane.

In each case, there is an option to "revive" column on their own. It is also worth remembering that a breach of the hull speakers may cause noise and extraneous sounds.

  1. Condensation on the membrane can be removed by heating it under an incandescent lamp. Remember to wipe the membrane can not, the slightest disturbance of its shape may result in the loss of sonic qualities.

  2. The disruption of the membrane, you can try to repair by replacement. To correct the form, worth a try if there's no other way, but do it very carefully.

  3. Dust dynamics, it is better to remove with a cotton swab and alcohol. Wind the wool on the tip of a long stick or post, soak it in alcohol and start cleaning.

  4. If you found detached from the diffuser wires, need to solder. After spaete everything in place, reinforce them with epoxy or glue. Duct tape is a strong option for dynamics.

  5. The worst option, if "led" magnet. In this case, repair the column only by replacing the magnet. To find a suitable magnet, can be harder than replacing the speaker as a whole.

  6. What was it column, the problem is complicated. It is better not to close the "gap" and to change the whole wall. For this you can use a plastic plate, a wooden Board, or metal. Not an easy task, the integrity column should be perfect, otherwise the sound will be lost. So after a new item is ready, pre-process locations of the new joints silicate glue or epoxy.


Advice 5: How to fix the motherboard

The motherboard can fail due to power surges, faulty power supply, through the fault of the owner or was just old. This failure promises destitute to the owner of the computer for a long trouble in a government building – in that case, if he will not be able to cope on their own. But you can try to repair the parent fee on their own.
How to fix the motherboard
You will need
  • liquid rosin and solder;
  • - soldering station or soldering iron with a fine tip and adjustable heat;
  • - a scalpel;
  • - tweezers.
First you need to make sure that failure came the motherboard. Rent from a friend a known-working power supply. Disconnect the computer from the mains, remove the side panel and disconnect your power supply from the motherboard, connecting is OK. Connect the electricity and hit the Power button. If the computer is started (on the Board lit up indicator, spun the CPU, the dynamics of a single short audible signal), then the problem is in the power supply.
If nothing has changed, you may have a defective motherboard. If the warranty on it has expired, return the unit to seller for repair or replacement. Otherwise, try to understand the cause of failure to lose anyway, nothing.Get the parent fee from the housing by unscrewing the screws that it is secured. Place the device on a table and inspect. The most frequent cause of failure of electrolytic capacitors become small cylinder coated on the top side cruciform incisions. This end should be flat. If the top of the capacitor swelled or charge around him dripped the liquid you found the problem.
Better to change all capacitors of the same type, even if failure came only one. The capacity of the new capacitor should be the same, the voltage can be higher. For soldering it is better to use soldering station – less likely to damage the charge and elements. If this is not possible, find a desoldering pump and a soldering iron with a fine tip and adjustable temperature. Secure charge vertically. Alternately, remove all the old capacitors - to do this, gently warm up the soldering on the back side of the Board, the capacitor with tweezers.
To put new items, you need to release from the tin holes in the Board. Warm the area with a soldering iron and try to remove the tin suction. If that fails, point the hole thin metal rod, holding it with tweezers and warm up the soldering iron, pressing down. In a pinch, you can use the drill with a thin drill.
Mounting legs of the capacitor into the holes of the correct polarity – the "plus" marked on the body of the instrument, and on the Board. Dilute the findings of the electrodes on the reverse side of the Board for stability, cut off excess with wire cutters. The heated soldering iron leg oil liquid rosin, then apply a bit of tin.
If the inspection fees you find damaged wirings carefully narrow with a scalpel blade or clear varnish on both sides of the defective area. From copper cable remove the thin Postings, cut a piece the desired length. The ends of the wiring and cleaned the place on the track will saladita and carefully solder. This method will help in that case, if the damage is not too deep: motherboard – layered device. The inner layers of the repair will fail.
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