ROCKCHIPS mp4 player  non-boot repair

 

ROCKCHIPS  non-boot, not link the computer, and see if there are no open machines where the wrong whith Welding  or charred,
And then use the power to see machines, according to boot keys. show a white screen, the  stop at 50 MA, and  still not boot,
To the question, is certainly not the normal power supply, look at the 1.8 V IC, to 1.8 V (IC) replaced sure, and you can try it.