Asus GL504GM No Display, Not Posting all voltage is Present

[Wachenaggo]

i this asus ASUS GL504GM that have a shorted Mosfet on the CPU Vcore and GPU vcore first i replace the mosfet on GPU vcore side then it turned on but in testing it will shutdown abruptly then after many hrs another mosfet died but this time it in the CPU vcore side then i replace it with a new one and it resolve the shorted on main 19v power rail.(i didn't use may power supply) in testing i used the original charger. so i didn't inject 19v to CPU using power supply but the issue is the laptop is not displaying nor posting no cpu activity with all voltage present 5v/3.3v,1.05v,Vcore for both CPU and GPU,and etc. when i turned on my power supply it will turn on automatically with a current draw ~1.4A.

maybe somebody can help.

[mon2]

Re: Asus GL504GM No Display, Not Posting all voltage is Present

have a shorted Mosfet on the CPU Vcore

Game over.

[Wachenaggo]

Re: Asus GL504GM No Display, Not Posting all voltage is Present

Game over.

but thats using the original charger and battery not my psu.

[Sephir0th]

Re: Asus GL504GM No Display, Not Posting all voltage is Present

It is Game Over anyway. There is no difference whether 19V are supplied from charger or bench top psu. Although PSU actually would have been better because you can Limit the current. However, a CPU which receives 19 through a shorted Mosfet/DrMOS is almost always a dead CPU

[mcplslg123]

Re: Asus GL504GM No Display, Not Posting all voltage is Present

If you're still in doubt, I'm the 3rd person in row to conclude its game over unless you plan to replace soc.

[Wachenaggo]

Re: Asus GL504GM No Display, Not Posting all voltage is Present

just can't believe since while i was just stress testing it. it shutdown then it had a short then i immediately unplug all battery and charger. then i know i have a short again. then never inject voltage after that just like a user must have use it.

gaming then a shorted mosfet then turned off. i located the short using multimeter only not by injecting voltage.

could the random shutdown caused by a failing CPU?? i had this issue where it would shutdown randomly and could trip the charger over current protection??

[mcplslg123]

Re: Asus GL504GM No Display, Not Posting all voltage is Present

Very likely, it was the failing mosfet and not failing cpu which was causing the issue.

[Wachenaggo]

Re: Asus GL504GM No Display, Not Posting all voltage is Present

Very likely, it was the failing mosfet and not failing cpu which was causing the issue.

so i maybe very unlucky to catch that early that's very sad. RTO it is so much time and effort hmm

[mcplslg123]

Re: Asus GL504GM No Display, Not Posting all voltage is Present

Its really annoying to see so many boards going to junk pile just 'coz of shorted high side mosfet for cpu. I've atlest 20+ boards with same issue in my junk pile ans all of them are acquired within last 6 months. So the failure is quite common and regular. Ahhh INTEL.