Hi!
ive been trying to figure out this Asus N551JM mobo problem.
The motherboard turns on by herself when I supply 19V with PS.
Goes directly to 390 mA , and rises a bit to 410 mA 1 min after or so.
All VCC signals are present, CPU vcore 1.7V etc
NVidia GPU warms up, but what surprises me is that the CPU does not get hot at all. The 3 coils of CPU VCC are warm, but not CPU.
Measured a bit and taking a look at the repair guide I came to the signal H_CPUPWRGD who is 1.07V
I was expecting a signal around 3V, but not sure.
This signal comes from the PCH.
While measuring the board shut down itself (I assume) and consumption went down to 67mA(maybe due to Nvidia chip getting too hot without the cooler) . Found out the 3.3V/5V IC controller getting quite hot.
Left a board for a minute, supplied power and back to the same 390mA (and 3.3V/5V IC working fine)
this could indicate bad PCH?
Or just a waste of time and leave it for donor board?
Thanks for any advice
ive been trying to figure out this Asus N551JM mobo problem.
The motherboard turns on by herself when I supply 19V with PS.
Goes directly to 390 mA , and rises a bit to 410 mA 1 min after or so.
All VCC signals are present, CPU vcore 1.7V etc
NVidia GPU warms up, but what surprises me is that the CPU does not get hot at all. The 3 coils of CPU VCC are warm, but not CPU.
Measured a bit and taking a look at the repair guide I came to the signal H_CPUPWRGD who is 1.07V
I was expecting a signal around 3V, but not sure.
This signal comes from the PCH.
While measuring the board shut down itself (I assume) and consumption went down to 67mA(maybe due to Nvidia chip getting too hot without the cooler) . Found out the 3.3V/5V IC controller getting quite hot.
Left a board for a minute, supplied power and back to the same 390mA (and 3.3V/5V IC working fine)
this could indicate bad PCH?
Or just a waste of time and leave it for donor board?
Thanks for any advice
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