Advice 1: How to determine a blown fuse

Automotive fuses are designed for protection of electric circuits of the machine from excessive current flow that occurs during a short circuit. In that case, if some of the vehicle's electrical system are de-energized, first and foremost, you need to check the fuses.
How to determine a blown fuse
You will need
  • - multimeter (tester);
  • probe;
Instruction
1
On cars use fuses of several types. The most widely flat plug, or knife. To determine the current, which is calculated on the fuse, using a color marking. For example, the fuse 1A is black on 2A grey, 3A violet, etc.
2
The fuses can be placed on the car in several places, usually a place under the dash and under the hood. But the places of their installation can be more specific variant depends on the brand of the machine.
3
There are two basic way to test automotive fuses. The first is the extraction and checking them visually, which is not very reliable, or by using the tester. When checking the tester, set it to measure continuity, this will usually need to install the handle on the sign of the diode. Then touch the probe device of the conclusions of the fuse. If it's intact, the gauge arrow will deviate to the digital readings will tend to zero, indicating an almost zero resistance.
4
The second method is much more convenient first and not associated with removing fuses from their slots. To check you will need a probe. Turn on the circuit that doesn't work – for example, passing light, the far, side lights, etc. then turns tap probe first a single fuse, then the other. If one output voltage is, and the other is not, the fuse is faulty. As an option, serviceable fuse can oxidize leg.
5
The defective fuse must be replaced in the same, that is designed for the same current. Do not use "bugs" is a direct way to damage the vehicle's electrical system. Even the factory fuses may be defective and not burn in case of short circuit and melt. To check "kill" one fuse, primatv its findings wires and touching them to the battery terminals. Quality fuse has to burn. If this happens, feel free to use these fuses in your car.
6
Don't forget that burnt-out fuse to protect your car in case of short circuit, which has its own reason. Check the wiring – if there were any damage to the insulation. Especially look carefully in the places where the wires touch the case. When driving circuit may again be repeated, so it is important to understand to find and eliminate its cause.

Advice 2: How to know whether the burned out video card

Video cards are devices that are used to display graphic images. They can be expansion cards or integrated into the motherboard. Expansion card inserted into the slot on the motherboard, the integrated runs in a separate chip or as part of the North bridge. These details of the life of graphics cards you will need to know how to act if you turn the computer on the monitor does not appear at all, or it is distorted.
How to know whether the burned out video card
Instruction
1
After turning on the computer in the normal mode, if the speaker connected to the motherboard, you hear one short beep. In case of malfunction of any equipment the signal changes. There are special tables of signals BIOS that can help you determine the problem right at the start of the computer. Most of the motherboard manufacturers to indicate a malfunction of the video card appointed one long and two short beeps. So when you switch on the system unit you hear one long and two short "beeps" and on the screen appears the message "No video signal" or no image, the problem is with the video card.
2
Unplug the system unit from the mains. If your graphics card is made in the form of an expansion Board, Unscrew the tightening screws which it is attached to the body. Pull down the plastic clips securing the card in the slot, and then remove it. Take a normal eraser and wipe the contacts, the problem may be that they are oxidized. Piece of thick paper (not newspaper) roll into a tight corner and wipe the contacts inside the slot.
3
Insert the graphics card back firmly until it clicks and turn on the computer. If nothing has changed, in the same manner, check the map on a known good computer. If the other computer the image appears, then the problem is in the slot on your motherboard.
4
Video card failure can manifest itself differently: for example, appear on the screen stripes and dots (called artifacts), colors are incorrect. Remove the card from the slot and carefully inspect it on both sides. The map should not be swollen and leaking capacitors, burnt areas and mechanical damage. If visible defects are not, perhaps, the cause of the problem – the overheating of the card. Perhaps inside your system unit, there is little ventilation. Check the video card on another computer.
Useful advice
When you hear one short beep, and the display on the monitor there may be from the external connector's disconnected or faulty interesny cable.

Advice 3: How to identify a burned up video card

When out of order graphics card, the computer stops output to the monitor, making it difficult for the user to determine the exact cause of the fault. It is difficult to determine what has failed is the video card, processor or RAM. In such a situation, you can see the graphics card and are specially stipulated for such a case, the self-diagnostic system.
How to identify a burned up video card
You will need
  • The computer with the graphics card Phillips screwdriver
Instruction
1
Every modern personal computer equipped with self-diagnostic system POST, which runs automatically whenever the computer is turned on. Usually this lasts a few seconds. At the end of the test the self-diagnostic system displays information about the hardware configuration and faults, if present. The state of the computer is duplicated by a sound signal specifically for those cases where due to problems displayed on the screen impossible. If the computer is fully functional, the self-diagnostic system will emit one short beep, which is also called – BEEP. If in this case you have no picture on the monitor, then most likely the problem is in the wiring between the monitor and video card may not work the monitor itself is shot down or some settings in the BIOS, but the card is not burned.
2
If instead of a single short beep, BEEP, you hear a series of short and long beeps, it means that the system POST has detected some malfunction. The audio signal produced by the self-diagnostic system, is a sound code, which consists of long and short sounds. You need to calculate how much and what signals makes the system self-test at the end of the test. Then test this code with sound error codes for your BIOS manufacturer. To determine the manufacturer, you can instructions to your motherboard.For the most common manufacturers of motherboard BIOS DTC graphics card are:— Award BIOS — 1 long and 2 short beeps.— AMI BIOS — 1 long and 2 short beeps, 1 long and 3 short beeps, 1 long and 8 short signals and 8 short signals.— Phoenix BIOS system POST this manufacturer uses alternating short and long signals. A sequence of 3-3-4 means the error testing RAM and can be a problem with the graphics card.
3
If your computer emits a corresponding sound signal, then there is no image on the monitor with the video card. To check burned graphics card or its malfunction is associated with something else, it should be examined. This operation usually requires opening the computer and graphics card, which will result in loss of warranty. So if you have a fault with the system self-test, contact the service center. If you are not afraid of losing the warranty on the computer or the video card, remove it from the computer and remove the heatsink. Carefully inspect the card for the presence of breakdown of capacitors, a dark burnt plots, paths, or elements of devices. Their presence means that your video card burned.

Advice 4: How to change the fuse

The fuses in the car are used to protect the junction block (fuse block) from overheating and fire network. Each fuse has its maximum discharge current. When passing through the power circuit current is exceeded, the conductor in the fuse is burned. Therefore, it is necessary to replace it.
How to change the fuse
Instruction
1
For starters, disconnect the negative battery terminal.
2
Then remove the cover from the junction block (fuse block).
3
Find the burnt fuse It needs to be melted or just damaged the conductor.
4
Remove the fuse from the contact-holders.
5
Install the new fuse on contact-holders. Please make sure that it is secured tightly.
Note
Installing a fuse with the amperage, different from the stipulated in this circuit, it is forbidden to avoid fire posting.

Advice 5: Why burn out the fuse

Fuses protect electrical circuits of the car from overloads and short circuits. If in the circuit there is a fault or an excessive amount of energy consumers, there is a short circuit, it is overloaded. Wire and the winding of the generator overheated, the electrolyte in the battery can boil. To protect against this, use fuses that interrupt the flow of current, if its strength exceeds a certain allowable value.
Why burn out the fuse
The reason the fuse blows, there may be several:the First is damage to any electrical node or element wiring, and the wiring in General, which is why there is a short circuit. As a result of the damage the current flows through a shorter path with significantly lower resistance. According to Ohm's law, resistance reduction part of the circuit leads to a proportional increase in amperage. In the end, burned fuse link in the fuse opens the electrical circuit and short circuit is prevented.The second current surge (overload). Occurs when the binding of any component driven by an electric motor. While inside the motor there is increased load, which assumes the fuse and burns out, protecting the electrical circuit.Third – preventer taken without due reserve. The current perejaume fuse (fusing current of his shell) is only slightly greater than the normal current for this circuit. In this case, it is sufficient a small increase relative to the nominal voltage that the fuse is blown.Fourth – the poor contact between the pad and the fuse. The fuse not only burns, but also fuse his body together with the Shoe. This often occurs when using low quality fuses that do not burn, and melt, causing burning of the contacts and melting the plastic fuse block. This is a very serious defect, as it can incapacitate the whole fuse block.Fifth – loss of the fuse stock. This happens over time, when the fuse block forms the portions with a smaller cross section and may be the result of heating, vibration, shock loads, in which the cross section of the fusible parts is so reduced that it fails and with some increase in current burns out.It is noticed that the fuse (s) blows more often than not during work, and at the moment of switching circuits. The reason is that the metal filament wiring when heated increases its resistance. At the moment the filament is not heated, so the resistance is small, and flowing current in is greater than normal. As the heating resistance increases and the current decreases. It is obvious that at the time of switching the inrush current occurs, the magnitude of the excess current consumption in normal mode.In rare cases, the fuses can burn out and when you turn off the circuit breaker. This is because, at the time of shutdown develop extra amperage and burn out the fuse. This phenomenon is more characteristic of those parts of the circuit, in which there are semiconductor elements.

Advice 6: How to pull the fuse

All car owners know what the fuses, but not all are exactly machines they are and how to change them. It often happens that the replacement fuse is an impossible task and the car is driven on the tow truck to change a blown fuse.
How to pull the fuse
You will need
  • the entire set of fuses,
  • lantern
  • - puller (pliers),
  • - a magnifying glass.
Instruction
1
To know the location of fuse box in a specific car from the manual. Blocks can be simultaneously in several places: under the hood, in the cabin, in the trunk. The underhood fuse block has box shape, black in color, which can be easily detected in the engine compartment. The fuse block in the cabin to detect difficult: it can be behind the glove box, the driver's legs, in the front, in the sidewall of the center console. It often happens that under one fuse box is the second. The latest models of automotive fuse block can be installed in the trunk.
2
Fuses fail (burn out) due to overload in the electric circuit. These prigruzki occur due to short circuit. The fuse is burning, opens the circuit, protecting equipment and vehicle systems from damage.
3
Right to change the fuse can be subject to simple rules. First, you need to find the right fuse. Remember this, every system can be several fuses. Second, in modern cars with fuses small size to take them from their nests should be a special puller (nippers). Thirdly, you should make sure that the fuse burned. Through the transparent housing shows fuse thin wire, which melts when the fuse burns out. In the fourth, instead of the burnt fuse to set healthy the same value. The face value is indicated by a number on the body of the fuse. This is not to put a fuse with a higher ampere value to replace the burned fewer.
4
Put the fuse in the same location where it was extracted. Often due to poor lighting or vision problems car owners install the fuse into the other socket. The result: irregularities in the modules and systems of the car, resulting in serious damage.
5
If all the instructions for the replacement of the fuse was observed and the malfunction in the vehicle are not eliminated, therefore, in addition to the fuse there is another cause of the failure. In this case, the newly installed fuse can also burn. To start searching for the causes of problems in the electrical system immediately or contact the technical centre.
Note
Never place instead of the fuse any other metal objects. This will lead to more breakdowns in electric and electronic parts of the car.

Advice 7: How to define, what burned down the maternal

How would the quality nor was the equipment from breakages nobody is insured even when there is a guarantee from the manufacturer. The motherboard is the most important constituent element of the computer system unit. If you find it faulty, because of certain characteristic signs, you will be able to determine whether burned out the motherboard or cause the failure of another part.
How to define, what burned down the maternal
Instruction
1
If you turn the computer on it fails to boot, but the fans are spinning on the Board, check the chip on the motherboard overheating. Remove the system cover and use your finger to touch these circuits. If they become very hot and burn your finger, most likely that is what caused the failure of the motherboard.
2
At the time of turning on the computer listen to all the sounds emanating from him. If the machine is turned off immediately after the start and then not turn on and you hear clicking or crackling is a sign of a short circuit on the motherboard. One of the reasons for such a failure in contact of the conductive element you are interested in details with the system unit.
3
Also on the fault of the motherboard can specify the complete absence of any sounds when the computer starts. If you hear a single signal, but does not turn on the monitor, check the connection to the video card and connect the video card connector on the motherboard. Then remove the memory card from the slot and place it back in place. If the situation does not change after you start the computer, the motherboard should be changed.
4
There are times when the computer will not turn on or off under heavy load, such as when you run "heavy" games. This is one of the indicators of a fault in the CPU power circuit on the motherboard or failure of the current that is applied to it. To confirm or refute these versions remove the motherboard from the system unit. If you see the darkened area, the reason lies in the prolonged overheating of the transistors on the Board. You can replace them, but there is no guarantee that the other elements will work properly. Often all these signs indicate that the motherboard is burned.
Is the advice useful?
Search