ASUS UX31A won't start. Black screen, no LEDs, buzzing sound coming from motherboard.
Hello, I need some help here.
My ASUS UX31A won't start anymore after a fan cleaning session. At first, after reassembly, there were the power LED, F2 LED, and Caps Lock LED all lighted up but with a black screen. Now, it became worse, black screen, no LEDs, and a strange buzzing sound coming from the motherboard when AC adapter is plugged in. AC adapter LED is green and sometimes, is orange but if I unplug it and plug it back, it becomes green again.. I tried all troubleshooting I could find on internet.
Here's what I did yet :
· Electrical discharge - unplugged battery, pressed and hold power button for 1 minute, plugging AC adapter and test.
· Trying to boot without battery.
· Unplugging and plugging back all motherboards connectors.
· Checked from burnt or damaged parts on the motherboard. Nothing found there.
· Pressing and holding power button for 30 seconds.
· Remove SSD and tried to power on.
· Disconnected IO board and tried to power on.
· Verified keyboard and power button connector. Nothing is loose there. I reseated it just in case and still nothing.
Nothing worked there so I need help.
Maybe the power button has gone bad, so if you know what pins to short to power on the laptop, im interested.
Here is a schematic if needed : schematic link here
Motherboard model : UX31A2 MAIN BOARD REV. 2.0
Thanks in advance for your time.
My ASUS UX31A won't start anymore after a fan cleaning session. At first, after reassembly, there were the power LED, F2 LED, and Caps Lock LED all lighted up but with a black screen. Now, it became worse, black screen, no LEDs, and a strange buzzing sound coming from the motherboard when AC adapter is plugged in. AC adapter LED is green and sometimes, is orange but if I unplug it and plug it back, it becomes green again.. I tried all troubleshooting I could find on internet.
Here's what I did yet :
· Electrical discharge - unplugged battery, pressed and hold power button for 1 minute, plugging AC adapter and test.
· Trying to boot without battery.
· Unplugging and plugging back all motherboards connectors.
· Checked from burnt or damaged parts on the motherboard. Nothing found there.
· Pressing and holding power button for 30 seconds.
· Remove SSD and tried to power on.
· Disconnected IO board and tried to power on.
· Verified keyboard and power button connector. Nothing is loose there. I reseated it just in case and still nothing.
Nothing worked there so I need help.
Maybe the power button has gone bad, so if you know what pins to short to power on the laptop, im interested.
Here is a schematic if needed : schematic link here
Motherboard model : UX31A2 MAIN BOARD REV. 2.0
Thanks in advance for your time.
that likes gaming, coding things, and repairing a shit ton of laptops.
! I'll try that and I'll let you know. If anyone have any other suggestions, im interested.
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