256 views Yuda Electronic (HK) Technology Co.,Limited. 2018-12-14
1, generally not the original mobile phone charger will have some problems, such as plug-in after the screen can not touch, or the charge is intermittent, so the original charger and data cable should be replaced.
2, there may be software problems, you can try to change a system.
3, after the phone is turned off, use the red line positive electrode to contact the motherboard tail pin to see if there is a charging foot. After finding it, solder it with a soldering iron, try it, if not continue.
4. Replace the R104 displacement near the charging tail plug.
5, try to replace the charging triode
6, see the charger head output voltage and current match with the original charger, if the charger output is generally 350-400MA, this is not the effect of charging the phone, and the output is 550—600MA can be solved.
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