I have an ASUS N550JV Rev 2.0 Motherboard that is not passing post. It was sitting plugged in for a while and when I tried turning it on it would occasionally try to boot (LEDs on front flashing with power solid) then just turn off. No screen activity. After moving the LCD forward or back and resetting the plug it would sometimes turn on. Now its no longer turning on at all. Just power light, (battery charge light if battery connected) and then the three other LEDs flash in sequence from right to left and then the power shuts off. Nothing has been able to bring it back to life so far. When it was working I tried to reflash the BIOS and did once but it changed nothing with how it was booting nor did it directly cause it to stop booting. I have read through forum posts here with others that have similar problems. I am not an expert in PCB tracing but have started dabbling as I am learning more and more about electronics and components. Obviously this is way further away from the old chips I used to work with.
Does anyone have any suggestions that they might offer. I have downloaded BoardViewer and the Schematic file posted here. I have tried following some of the other posts but those are more specific to their issues of auto starting or just nothing.
I have had the MOBO replaced once before by Asus (probably a bad idea) but I do not want to do that again. Frankly I would love to get this working again because it is such a great laptop form factor.
Other things I have checked:
Power Adapter has correct voltage and amps. Tried other ac adapter brand new from amazon and no changes. Sent it back.
Tried removing battery and cmos battery for days and holding power button stuff. Basic discharge circuits and reattach to see if that works. Still nothing.
I have traced a few capacitors and they have voltage but as I stated I am no PCB technician and many of the parts are super small.
I have checked the CMOS battery and it still does have voltage of 3V.
Re did the thermal paste on the GPU and CPU just incase it was overheating.
I tried alternate RAM. And even tried reflowing some of the capacitor and coils to make sure the solder wasn't cracking and getting disconnected.
If anyone has suggestions I am greatly appreciative.
Does anyone have any suggestions that they might offer. I have downloaded BoardViewer and the Schematic file posted here. I have tried following some of the other posts but those are more specific to their issues of auto starting or just nothing.
I have had the MOBO replaced once before by Asus (probably a bad idea) but I do not want to do that again. Frankly I would love to get this working again because it is such a great laptop form factor.
Other things I have checked:
Power Adapter has correct voltage and amps. Tried other ac adapter brand new from amazon and no changes. Sent it back.
Tried removing battery and cmos battery for days and holding power button stuff. Basic discharge circuits and reattach to see if that works. Still nothing.
I have traced a few capacitors and they have voltage but as I stated I am no PCB technician and many of the parts are super small.
I have checked the CMOS battery and it still does have voltage of 3V.
Re did the thermal paste on the GPU and CPU just incase it was overheating.
I tried alternate RAM. And even tried reflowing some of the capacitor and coils to make sure the solder wasn't cracking and getting disconnected.
If anyone has suggestions I am greatly appreciative.
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