Troubleshooting of computer hard drive abnormal sound

Sometimes the hard drive is in use, will suddenly "when" straight ring, and then can not continue to read and write, restart the computer again, in the BIOS can not find the hard drive. The more typical fault is just boot hard disk use normal, but when the use of one or two hours, the hard disk suddenly appear this abnormal sound phenomenon.

From the surface analysis, this seems to be a hard drive of a chip instability caused hard disk work paralysis. The hard drive needs a steady voltage and sufficient current supply to work. If the voltage is not stable or the supply of current is insufficient, it will appear to find difficulties, hard drive "Yesterday" straight ring, and then appear either hard drive or the number shows, or read difficult, but also is in the process of the hard drive suddenly lost or data can not read and so on. Why is there such a phenomenon? Currency is due to the lack of power or failure of the computer to use the above situation.

The troubleshooting process is as follows:

The 1th step, when the failure occurs, you can contact the hard disk circuit board chips, check whether the chip is very hot-if a bit hot, that is not a chip failure out of control.

The 2nd step, encounter this kind of 愔 condition, easy to think the hard disk is broken, but, this kind of trouble hard disk does not necessarily really be damaged, and may be a superficial illusion. At this point, the data is completely split, read out, and then do fault handling.

The 3rd step is to check whether the power supply +5v and +12v voltage is stable. Use a multimeter to test. The voltage is too high and too low tai, generally within 10% fluctuations can be considered a positive goods situation. For the lack of power current, you can use the hard disk, optical drive and related settings to calculate the full load of the power required to work, and then compared with the power of the switching power supply used. Under normal circumstances, the power supply should be greater than the maximum power of each component 10% of the total.

Another situation may be the hard disk itself problems: chip failure, or the motor has been damaged, or the magnetic arm fracture. After the previous test, if the power supply is not sufficient, or hard disk control chip damage caused, then need to check the hard disk circuit board and the hard disk body of the magnetic arm power supply interface is part of the good contact.

The hard disk circuit board and the disk power supply phase is not the use of pins or flexible cable, but the use of crimping methods, because the hard disk for a long time, the interface of the circuit board tin oxide easily oxidized, if coupled with poor working environment, it is more easily oxidized. The coil spring plate oxidation, will cause the two contact bad, causes the magnetic arm seek the electric power supply to be unstable, then appears to seek the way unusual, causes the hard disk to be unable to work normally. For bad contact, the solution is also very simple, take apart the fixed circuit board 4 screws, remove the circuit board.

Pick up the circuit board, on the interface side of the circuit board will find two rows of spring pieces. Use sandpaper carefully to each of the contact points of the spring polished light, while the circuit board of the corresponding contacts also polished, and then the circuit board is loaded back.

Find the hard disk suddenly "Ka ka" ring the problem is, if the chip is a problem to replace the chip, power supply problems on the inspection system.