Short circuit on soldered RAM on PC Asus X751L

[totof]

Hello,

The motherboard of my Asus X751L PC (reference X751LD rev 2.3) is HS because when I turn on the PC all the voltages are good but 3 of the 8 RAM chips are vey hot and the PC does not start.
I see that there is a short circuit on the RAM power supply (1.8V).

Do you think if I remove all the RAM chips soldered to the motherboard and add an external RAM stick to the DIMM socket it might work?

Thanks

[totof]

Re: Short circuit on soldered RAM on PC Asus X751L

I unsoldered the 8 memory components and inserted a RAM module into the SO-DIMM socket.
There is no longer the short-circuit, all the voltages are correct but the PC does not start correctly (black screen, consumption 0.23A).

[ktmmotocross]

Re: Short circuit on soldered RAM on PC Asus X751L

u must disable onboard ram or repair it. and rams voltage is 1.35V or 1.2V

[totof]

Re: Short circuit on soldered RAM on PC Asus X751L

Indeed the voltage of a RAM is 1.4V and not 1.8V as I indicated in a previous message.
On the other hand, how to disable the onboard RAM on this mainboard ?

[rediii]

Re: Short circuit on soldered RAM on PC Asus X751L

here, maybe it helps!

[totof]

Re: Short circuit on soldered RAM on PC Asus X751L

Thank you rediii but it seems to be not the same board.
I found information for board X751LD rev 2.0 (not 2.3) and i will try.
To be continued ...

[mon2]

Re: Short circuit on soldered RAM on PC Asus X751L

See attached - which one is yours ?

[totof]

Re: Short circuit on soldered RAM on PC Asus X751L

It's X751LD_2.3_60NB08D0_MB1600

[mon2]

Re: Short circuit on soldered RAM on PC Asus X751L

Attached,

[totof]

Re: Short circuit on soldered RAM on PC Asus X751L

Thank you mon2.
I have moved R2145 to R2144 (for PCB_ID0 signal) and R2153 to R2146 (for PCB_ID1 signal) to disable onboard RAM but unfortunately it does not change nothing.
To be continued ...

[totof]

Re: Short circuit on soldered RAM on PC Asus X751L

Hello.
After unsoldering the onboard RAM and disabe it, the computer still won't boot.
All the voltages are good, one of the LEDs lights up permanently before even pressing the power on button.
Consumption is constant at 0.23 A. If I press the power ON button for 10 seconds, consumption goes back to 0 very briefly.
With my little thermal camera I observe that the 0.9V and 1.7V coil are a little hotter than the others components.

I'm a little out of ideas.

Could it be a bios problem ?

[blzblz]

Re: Short circuit on soldered RAM on PC Asus X751L

Thank you for all I learned a lot of things