The second repair of ASUS F552V notebook triggered power failure repair

Machine model: ASUS F552V notebook

Main board number: X550CL 2.1

Fault phenomenon: notebook triggers power failure.

Maintenance process:

An ASUS F552V notebook computer, which is a second repair machine. The fault is triggered by power failure. Remove the battery, and the digital power supply will turn on the trigger current to 0.9 and turn off the power. In this case, the BIOS, on-board memory or lack of voltage.

Second repair ASUS F552V notebook triggered power failure maintenance Figure 1

Second repair ASUS F552V notebook triggered power failure maintenance Figure 2

Visual inspection shows that the south bridge of the video card has been passive, something has been dug on the back of the video card, and components have been dug on the side of the USB connected below. The front and back of the onboard graphics card are surrounded by solder oil, and only the BIOS has not been processed.

Second repair ASUS F552V notebook triggered power failure maintenance Figure 3

Second repair ASUS F552V notebook triggered power failure maintenance Figure 4

Open the bitmap and patch up the excavated components. The bitmap shows that L2605 is an inductor, and the points on the back of the graphics card are L7001 inductor and resistor R7008. It is also invalid if it is triggered or powered off after compensation, and the original BIOS is brushed.

Second repair ASUS F552V notebook triggered power failure maintenance Figure 5

Second repair ASUS F552V notebook triggered power failure maintenance Figure 6

Judging that it’s the onboard memory problem, brush the masked memory on the BIOS, add a memory, and the computer is turned on but the screen is turned on.

Remove the video card air gun and heat it, so that the screen will not be displayed. Replace the graphics card on BGA.