I've an X555LD Rev 2 motherboard that doesn't turn on. Checked the power button and it has 3.3V. Also the two near mosfet seem ok. Maybe it's a bad BIOS?
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Re: Asus X555LD doesn't turn on
Thanks. I forgot to mention that there are no led on too. May it still be a BIOS related issue?Comment
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Re: Asus X555LD doesn't turn on
Solved by desoldering and reflashing the BIOS. Thanks everyoneComment
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Hello,
I have a problem with Asus X555LD after watter damage.
The KBC chip with some traces was damaged.
I changed KBC chip, repair trace. Laptop works great, but if I turn it off,
it turn on again. If I put adapter in it, it power on.
Any idea? Schematic is not available.. -
Hey guys,
i have a asus motherboard here and as the title says after the first mosfet (in the picture) there is nothing more than 3.15v.
I injected 19v and max. 1 amp at the charging port and there is not voltage drop or smth. It's just taking 19v and 1 milliamp.
Then i tried to inject 19v and max 1amp after the current sensor and there it first takes 19v and 4 milliamps and after 2 seconds it is taking nothing (no current).
I measured on the coils on board everything seems fine. Also the main power rail is not shorted (infinite resistance).
Now i thought something... -
I have an Asus GA502D, it had a blown mosfet which I replaced and the laptop booted into windows, a few mins later it shut off, the same mosfet was blown. I thought maybe just a bad mosfet but same thing happened again, a few mins in windows and shuts off.
I have removed the mosfet and can run the laptop no problem
The MOSFET is FDPC5018SG
Can anyone point me in the direction of what could be the cause of this, could it be the controller rt3663bc?
Thanks -
The board number is GU502DU. I repaired this a couple weeks ago and it came back with the same issue, same mosfet failed (PQH9201). I'm hoping that the GPU was spared this time.
I used the same replacement part (purchased from Mouser) and I'm certain the soldering was done properly since it took just as much effort to remove as before. What could cause this same mosfet to fail? I'm thinking if it was unsuitable then the others would fail too. I looked for similar failures on YTube and the mosfet was replaced with AOE6930 in one instance and AOE6932 in the other but it's possible that the... -
ASUS X555LD Rev:2.0
Customer brought me this laptop and said its automatically turned off within few seconds after start it.
When I switched on, it starts with fan spinning speed increase and decrease few times (5 or 6 times) and stayed at full speed for around 30-60 seconds and turned off automatically.
The steps I have followed,
Replaced a fan (nothing changed)
Replaced U5003 - TEMP. SENSOR NCT7717U - (nothing changed)
Replaced Q2804 - Signal to IO - (nothing changed)
Replaced IT8585E/FX and flash EC (nothing changed)
Removed Q3201...
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