Dell N7110 CPU power cuts off problem

[hazardus]

Hi guys,

So I solved the hot FETs problem in the other topic and I really appreciate the help I got there. I hope I'll get some help here too.

So the new problem is the +VCC_CORE cuts off.
I don't know why.



I got the same signal on C126,C127,PC161 and PC37.
So there are two different lines for +VCC_CORE. Both shows the same.
2V isn't too high for +VCC_CORE?

I tried different bios but that didn't help. I tried different CPU but didn't help.

I'd appreciate any help here.

[hazardus]

Re: Dell N7110 CPU power cuts off problem

I forgot to attach the diagram.

[khaahk]

Re: Dell N7110 CPU power cuts off problem

Start with the basics again. Resistance on PL4,5,6,9 without cpu? Try to disable PU1,2,3 in turn, maybe the board does not mind if one channel is disconnected from VCC_CORE.
Try to turn them off by connecting the EN signal to GND. Or remove the PU together with the FETs it is driving. If you just remove the PU, then the FETs might get some random signal at gate and you will have full voltage on CPU...