power supply is a very important component of a computer, the device without which personal computers can not receive power.This component is often out of order, and the repair of the power supply, you can try to implement at home.There impulse and linear variety, principle of operation and the device which are different.Linear block consists of a stabilizer of the diode bridge and the transformer.The pulse voltage device for powering the generator is rectified by a diode bridge, and then removed from the high-frequency transformer for further output.
repair the power supply is done using tools such as the Phillips screwdriver, soldering iron, multimeter with continuity transitions.In addition, the required set of resistors, a hard drive or the motherboard may also be useful oscilloscope and optional (12) power supply.It should be borne in mind that the device not be switched without load pulse.
In desktops often set ATX power supplies, repair procedure are sufficiently distinctive.
Firstly, the case of failure of the device to check the arrival of the board voltage.If not available, you should seek to open the card.It may be in the noise filter, switch, wires may be faulty outlet.If everything is OK, check the supply voltage after the diode bridge.Then, carrying out repair power supply ATX, check the fuse, the resistance of which should go to zero.
Then look varistor (whether there is a current after it).It is easier to do when the device.If the power supply quality, in its current features include smoothing chokes, winding resistance which should approach zero.
The next step repair the power supply includes checking the state of the diode bridge at startup.It should be made an alternating current, and go - permanently.Otherwise diodes faulty.
Very often the cause of failure of the device lies in the failure of the capacitor.If they are run down or swollen, then repair the power supply is the replacement of these elements.Of high-voltage transistors can be checked with a multimeter.
general troubleshooting in the computer, as well as repair of the power supply of the TV requires special knowledge and skills.Not only have a general idea of the work of these devices.Therefore it is best to contact the experts at the service centers.Sometimes the cost of work can exceed the price of a new power supply.Thus, it will be appreciated that it is cheaper: repair or replace a defective unit.
determine that the unit is out of order, the closure can be black and green contacts (from the connector to connect to the motherboard).If the data connection wires, such as a paper clip, a fan unit does not work, then the device is most likely out of order.Joining contacts can only be disconnected from the network device!
