Asustek Flying Fortress FX86F notebook will not be started up for maintenance when it enters water

Asustek Flying Fortress FX86F notebook will not be started up for maintenance when it enters water.

The memory slot is corroded, and both sides of the memory are corroded. Especially, the memory chip on the right side of the memory is burnt directly. First, the memory slot is replenished, and then the screen line interface is processed. The other side of the screen line is also burnt. Scrape it with a knife, patch a line, and then plug it back in. The boot current runs directly, and the machine is turned on.

Machine model: ASUS Flying Fortress FX86F

Main board version number: FX505GD 2.0

Fault phenomenon: the notebook does not boot when it is flooded.

Maintenance process:

Received an Asus Flying Fortress FX86F. The customer described that the teapot fell down when the notebook was making tea, and the water went into the bottom of the notebook, which directly smoked and turned off.

Asustek Flying Fortress FX86F notebook enters the water and does not start maintenance Figure 1

Asustek Flying Fortress FX86F notebook enters the water and does not start maintenance Figure 2

Dismantle the machine, remove the bottom case, the memory slot is corroded, and both sides of the memory are corroded. Especially, the memory chip on the right side of the memory is directly burnt, the memory gold finger is also burnt, and the 36-40 pins of the screen line are also burnt black. When the motherboard is removed, it is ok to visually inspect the back.

Asus Flying Fortress FX86F notebook enters water and does not start up for maintenance Figure 3

Asustek Flying Fortress FX86F notebook enters the water and does not start up for maintenance Figure 4

Clean the corroded place first and put it in the oven for 15 minutes. After taking it out, continue to clean up the corroded place. Make up the memory slot first. Look at the memory power supply chip. Turn on the point U8300, find a new spare one, and continue to change the left 8-pin tube. After the change, turn on the electricity. The standby voltage of 0.021 is normal. Power-on can be triggered, and the current goes up to about 1.3 (no memory inserted).

Then deal with the screen line interface, scrape the corroded place for 19V power supply, directly connect 37-40 pins together, and then fly a line to the main board 19V to connect the screen line.

The upper memory trigger result is not bright, and there is a running code in the current. 0.98-1.29-1.46-1.57-1.25-1.48 should be able to light up. The memory voltage measured by the probe is 1.2V, and the screen 19 is connected. It is still the same after brushing the original BIOS.

Asus Flying Fortress FX86F notebook enters water and does not start up for maintenance Figure 5

Dismantle the screen line again, and through reverse observation, it is found that the other side of the screen line is also burned, and the 37-40 pin links are all disconnected. Scrape it with a knife to mend a thread, and then plug it back in. The boot current runs directly, and the machine is turned on.