For cell phone cable

Replace the phone cable to the four steps, as follows:

        1, the test cable short-circuit (this step is very important, a lot of inferior cable do work, but off the short circuit also because such a lot of rookie burn CPU power IC font, etc.) cable into the motherboard (there first seat folder power test machine to see whether the current sub-welded to the following new ribbon cable) power supply voltage to 2V (if none, then the power supply voltage to 3.8V test machine to see whether to boot properly (which can only prove cable short-circuit does not prove that the cable open or normal).

        2, the test cable size is qualified, empty cable into the shell and installed shaft to see cable width is appropriate, with particular attention to whether the space activities of the shaft parts cable tight even if the cable for good also with time.

        3, the LCD-related resistors and capacitors mounted on the other circuit (listening, vibration, boost, etc.) first installed and then a small screen mounted on the test machine, if not remarkable proof of this cable is not normal (note that some phone required closing lid, or allocated the OSO small screen only significant).

        4, mounted large screen and other circuits, the most important thing is to do the cleaning work for a good cable, use of the brush a little water gently brush a brush cable seat, welded oil or rosin cleaned to avoid poor contact caused by the failure.



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