It is used by my colleagues in graduate school, because a sudden will not turn on (plug the power transformer completely no response after the open, no lights will flash and no fans will be moving), sent to service stations to determine the need for the motherboard, because the price can not accept the transfer to the little brother here
Internet grasping a maintenance manual, which mentioned that if the power output at 19V can not boot, you need to change motherboard (nice to earn amending the law), opening them dumbfounded, totally different from conventional motherboard I do not know where to start, please you advanced to provide a direction
Another issue that sets the framework for the motherboard is fixed Northbridge (ALI) heat sink, not afraid of fire power on the frame of the North Bridge, on the framework for a number of points could not be measured really cheap design
Internet grasping a maintenance manual, which mentioned that if the power output at 19V can not boot, you need to change motherboard (nice to earn amending the law), opening them dumbfounded, totally different from conventional motherboard I do not know where to start, please you advanced to provide a direction
Another issue that sets the framework for the motherboard is fixed Northbridge (ALI) heat sink, not afraid of fire power on the frame of the North Bridge, on the framework for a number of points could not be measured really cheap design
Because I do not know where to start, ruining it does not matter in the owner’s consent, after the CPU heat sink after the electrical test, the measured DC outlet voltage, only 5V, so lock the power supply input components, then repair Shui Po using the method, one by one part continue to touch a result, the bottom of coils next to the DC socket 8-pin IC feels hot commodities, and for an HP transformer (18.5V 4A, the original is 19V 3.42A) measured first touch was hot to the IC, the original power supply supply is not constant on the load of green light, a flash plug NB Lantern Festival because the load anomaly
IC No. 4435 L24CA, the Internet can not find the information, but referred to a foreign Web site of the NB Zheke ACER easily broken
I do not know whether or not the normal battery charging circuit, because there is only one empty when the cross-pieces of fake batteries, vertical display of the USB is 4 PIN
Advanced data do know Zheke IC
IC No. 4435 L24CA, the Internet can not find the information, but referred to a foreign Web site of the NB Zheke ACER easily broken
I do not know whether or not the normal battery charging circuit, because there is only one empty when the cross-pieces of fake batteries, vertical display of the USB is 4 PIN
Advanced data do know Zheke IC
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