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ASUS n550jv water damage no booting repair
Machine model: ASUS n550jv
Mainboard version number: n550jv_two.
Fault phenomenon: notebook water damage no booting.
Maintenance process:
The front and back of the motherboard.
ASUS n550jv water damage no booting repair Figure 1.
ASUS n550jv water damage no booting repair Figure 2.
One of the water damage was removed and replaced by visual inspection.
ASUS n550jv water damage no booting repair Figure 3.
After replacement,Measuring diode value was not powered on directly without Short circuit, automatic switch 0.27A, and VCC was obviously missing.
ASUS n550jv water damage no booting repair Figure4.
Pl8200 + VTT was found in VCC_CPU_VO has no VCC output.
ASUS n550jv water damage no booting repair Figure 5.
Measuring diode value has no Short circuit, and ton has no VCC.
ASUS n550jv water damage no booting repair Figure 5.
Take a magnifying glass to see that one end of the resistor has been corrode. Remove the auto power off resistor and find that PAD has been Oxygenation.
ASUS n550jv water damage no booting repair Figure 6.
Hang the copper foil with a knife blade,add solder, find a 1m resistor to install, ton VCC has returned to normal 20V.
ASUS n550jv water damage no booting repair Figure 7.
Power on again, the fault still remains.Close look at the motherboard found a line printing hall black, with a blade to see that has been broken.
ASUS n550jv water damage no booting repair Figure 8.
Decisive add solder,poor line repairing, power on again, the current has jumped up, connect screen booting up.
ASUS n550jv water damage no booting repair Figure 9.
