ASUS X550V notebook does not boot repair

Machine model: ASUS X550V

Plate number: X550VC VER:3.0
Malfunction: Notebook no booting, the current runs between 0.8 and 0.9 auto power off

Maintenance process: When you get the machine and look at the current auto power off, you can conclude that one VCC is abnormal. Decisively disassemble the machine, simply look at it and find nothing strange. The machine is slightly water damage. Measure each Inductor VCC. Look carefully and find a small piece of corrode next to the memory.

ASUS X550V notebook does not boot repair figure 1.

The resistor PAD that I dropped has fallen off. I simply scraped a little tin and soldered it again. The power-on fault remains the same. Simply remove all three resistors of corrode, and PAD will fall off. Scrape the resistance on the tin patch, and scrape the paint, and it is found that there is a problem with the resistance.

ASUS X550V notebook does not boot repair figure 2.

Open Boardview to find this position. At first glance, three resistors are found, one is a 3.3V pull-up resistor (R5007), and the alarm signal is sent directly to EC. Just find one and replace it.

The other two are used for voltage division (R1811, R1810). When one end of the resistor is 1.5V, it is concluded that this is memory, VTT VCC 0.75V didn’t come out, but it was found in memory particles.