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teleshema - Free operating instructions of consumer electronics

Power supply for the computer to

Power supply for the computer to Have a stationary computer and it works for the first year, you soon may be a situation as I was last week. The computer I have worked five years and I did not look, all is not what one day from the voltage drop I broke the power supply of the computer. When I disclosed my power supply, I saw that there just full of dust and some hair, apparently all the debris had collected and overheated the power supply for the computer. Accustomed to my computer, I decided to repair it myself. When he climbed into it, I realized that it is better to buy a new power supply for your computer than to try to repair the old. The Chinese did that transistors burned and tracks pootslaivalsya from the PCB. This is how we have to bask in the power supply for the computer, so as to burn. As it turned out I just have the fan is probably jammed, that is on the back of the PSU for the computer. This fan was not the bearing and the sleeve made of PTFE, in General, the system stalled and all burned in the power supply of the computer. In some forums say that the PSU is the heart of the computer. Makes me laugh this statement, because the heart of a computer is the processor, and the memory is the brain. This is all understandable, but if the docks for the repair of power supply units for computer carry such nonsense, then there is clearly aid should not wait I thought, and went immediately to the Internet to buy, what would you advise without preparation. In the shop as I understood the main selling computer power supply at any price, and there God Pology. I suggested to my computer "Stump 3 motherboard 133 GHz" power supply 500W, I listened to the arguments of the seller and realized that if a man knows not wish to buy a power supply for the computer power 300W for the price of 16 green raccoons, then he obviously overpaid three times, and will not buy what you need. First trip to the store did not give a positive result, because the store had only expensive power supplies for computer, with a good advertising support.
IN General I decided to try to repair the power supply for the computer. Mostly flying high voltage filter. There, as written, fails the switching transistor in the rectifier of the power supply unit for the computer. This can be in any of the channels in the power supply for the computer and for 12 V and 5 V. I thought on my block maybe something similar and started to search for the fault. First looked at the circuit fuse before the filter. He got fired:) so I have replaced it, and it burned again. Went on to look. Took a magnifying glass and started charge power supply to closely examine. Gaps are found, but some Board where the power supply had a dark-colored track. See basked much. Where apparently there were problems there and burned. Took down the system checked at the breakdown of the high voltage rectifier, then the key. And the first fault in the filter capacitor was damaged.
Then I replaced the high voltage transistor of a key and a protective diode between emitterom and collector. After that procedure, all I have to work. Repair power supply took a day, but mostly I went to the market for the transistor and the capacitor, and sought for the scheme. If it was the power supply for a computer, I probably would have repaired faster. Yay! Now you can go on forums and try to be clever!

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