A fault resolution method caused by hard disk power supply interface

Troubleshooting of starting and welding by hard disk power supply interface

The author of a computer post more smoothly, but the system does not detect the hard drive, and can not enter the system, the author began to suspect that the system file damage.

So ready to reload the system, but still can not detect the hard drive, so the decision may be hard disk hardware problems, such as hard disk Power interface virtual welding, hard disk Power interface starting welding problem is more common. The following is the author's testing process.

Failure phenomenon

A computer that can be used normally can not find the hard disk for a while, but the problem is not very serious, still can make use of.

One day the computer post more smoothly, but the system can not detect the hard disk, repeated restart many times without any improvement. Previous failures are mainly manifested in the following areas.

1, the general situation of the computer can be used normally.

There is a careless mobile chassis location, start the computer again, in the system self-test will not detect the hard drive, and the hard drive indicator is often bright, can not hear the spindle motor and click the sound, unable to enter the operating system, but gently move the chassis or gently slap the chassis, it may return to normal.

2, read and write a large number of data is more prone to panic, almost every time after the restart caused by the partition table files and Fat files lost, and will lose the hard disk of important documents, music and pictures and so on.

3, when the random head can not be normal to look for 0, hard disk constantly issued by the impact sound, hard drive indicator is often bright, the system locked, unable to enter the operating system, the need for repeated in the middle of several times may return to normal.

Fault analysis

This failure may be a hardware problem on the hard drive or a problem with the power supply for the hard drive.

Troubleshooting

1, the operation of HD tune HDD detection software into its main interface, and then switch to health options to view the health of the hard drive, the results are all good, did not find any problems, so the suspicion is that the power supply is insufficient.

2, the use of substitution, replaced by a good chassis power supply test, found that the fault still exists, prove that the power supply is not a problem.

3, so the hard drive down, observe the fault. First check the interface and circuit board, found that there is no strange, but the phenomenon of the failure of the hard disk power supply problems.

4, the use of universal table detection Power Interface pins, detection of the 4th position, found that the ground into a short-circuit state.

5, observe the circuit board and the welding point between the pins, found that the +12v power supply and circuit board welding Point has been welded, it is estimated that the power cord is often plugged in.

6, because of the position of welding so that the place is always in the virtual connection state, any change of external force, vibration or position may make the hard disk can not get normal power supply or sudden power failure in normal operation, and in the hard drive circuit 12V voltage main power supply machine, which means that the hard drive at any time when the high-speed operation may suddenly power off and stop turning, As a result, a series of previous failures were caused.

7, use the hexagon screwdriver to remove the circuit board from the hard drive, and then use the hot air gun to weld the welding place well.

8, reinstall the circuit board to the hard disk, at this time the fault has been ruled out.

Hard disk power supply interface Virtual welding may be the use of hard disk for a long time, as long as the sweating site can be re-welded to solve the problem.