ASUS Flying Fortress fx86f notebook does not turn on due to water ingress

ASUS Flying Fortress fx86f notebook does not turn on due to water ingress

Machine model: ASUS flight fortress fx86f

Mainboard version number: fx505gd 2.0

Fault phenomenon:water damage no booting

Maintenance process:

Received an ASUS flight fortress fx86f, customer descriptionnotebookWhen making tea, the teapot toppled, the water went to the bottom of the notebook, and it was turned off by smoke.Dismantle the machine.

ASUS Flying Fortress fx86f notebook does not turn on due to water ingress Figure 1.

ASUS Flying Fortress fx86f notebook does not turn on due to water ingress Figure 2.
Remove the bottom shell, memory slot corrode, both sides of the memory corrode, especially the memory chip on the right side of the memory is directly burnt, the memory finger is also burned, the screen cable 36-40 pin is also burned black, the motherboard is removed and the back is OK.

ASUS Flying Fortress fx86f notebook does not turn on due to water ingress Figure 3.

ASUS Flying Fortress fx86f notebook does not turn on due to water ingress Figure 4.
First clean the place of corrode and put it in the oven for 15 minutes. After taking it out, continue to clean the place of corrode and give priority to filling the memory slot. Look at the memory chip VCC, open the point u8300 and find a new spare one. Continue to replace the left 8 pin MOSFET. After the replacement, power on, standby 0.021, standby VCC is normal.Power on switch, current up to 1.3 or so(no memory).

Then process the screen cable interface, scrape open the 19v VCC at corrode, connect 37-40 pin together, and fly another wire to the main board 19v to connect the screen cable.

The result of memory switch is not on. If the current runs out of code, 0.98-1.29-1.46-1.57-1.25-1.48 should be on. The probe measurement memory VCC 1.2V is normal, and the screen 19 is connected, and the original BIOS is still the same.

ASUS Flying Fortress fx86f notebook does not turn on due to water ingress Figure 5.
Remove the screen cable again. After reverse observation, it is found that the screen cable is also burned, and the 37-40 pin link is disconnected.Use a knife to scrape open and make up a wire, and then plug it back. The boot current directly runs code,booting up.

ASUS Flying Fortress fx86f notebook does not turn on due to water ingress Figure 6.