820-00165-a missing pp1v0s_s0

[Don Anton]

[h=2]FWD: 820-00165a - fan spins, no pp1v05_s0[/h] 1 minute ago
Hi, Good Day,

I have 820-00165-A board, no PP1V05-S0. water damaged near U7600 area.
I replaced U7600 with a new chip check the resistors around and all fine.

Here are the voltages I get.
R7600 =5V
R7630 =4.9V PIN(1&2 BOTH)
C7630 PIN 1 =4.9V PIN 2 =0V
R8138 =3.3V
C7616 =1.0V
C7615 =1.8V
R7631 =0V
R7641 =0V

Also in U7600 pin 10 which is GND pad is missing. I found shorted PPVCC_S0_CPU. I removed R7320 &R7310 & found shorted in PCH side (R7320 pin 2 & R7310 pin1). Can You pls help to sort this out?

Thanks
Regards
Don

 

[smiba]

Be aware that PPVCC_S0_CPU is supposed to have a low resistance to ground, (of just a few ohms). So unless it's a dead short there is nothing wrong
What is the resistance of PPVCC_S0_CPU and PP1V05_S0 to ground?

 

[Don Anton]

Hi, Thank you for your information as i didnt know that. it is 0.002 ohms. is that normal?

 

[smiba]

You're comparing with one of the leads to ground right? Because that is a actual short to ground then

On what line is this? Or on both?

 

[Don Anton]

Hi Smiba. So sorry not to reply you, as I was out of the country. I sorted out the issue and all good. thank you so much for your help.