820-00165 no power. PP5V_S4RS3 (NO PRESENT)

[juhusu]

820-00165 no power.
PP5V_S4RS3 (NO PRESENT) 0.000V and diode mode 0.440V

SMC Bypass mode: two fan sping two time 400mA pulse when connect charger (Orange light) Then 24mA constant

7100
Voltage whit out Battery
01-0.004V
02-19.58V
03-5.267V
04-3.326
05-1.096-1.106V up-down-up-down....
06-0.000V
07-0.791
08-1.433-1.438V up-down-up-down....
09-0.037V
10-3.403V
11-3.403V
12-3.427V
13-3.396V
14-3.396V
15-0.000V
16-8.56-1.305V
17-8.58V
18-8.58V
19-5.075V
20-5.038V
21-0.544V
22-0.000V
23-8.59V
24-8.76V
25-12.98V
26-19.19V
27-19.48V
28-19.48V

Diodo Mode
01-0.665V
02-0.639V
03-0.554V
04-0.488V
05-0.734V
06-0.148V
07-0.733V
08-0.554V
09-0.729V
10-0.544V
11-0.547V
12-0.335V
13-0.527V
14-0.500V
15-0.734V
16-0.681V
17-0.139V
18-0.142V
19-0.470V
20-0.472V
21-0.475V
22-0.000V
23-0.138V
24-0.592V
25-0.588V
26-0.663V
27-0.632V
28-0.619V

 

[2informaticos]

Don't waste time with U7100, if you get correct PPBUS_G3H.

Dp you get only two pulses, or power cycling every 5s?
VCORE and PLT_RESET_L pulsing at same time?
Any history fault available?
3V3_S5/SUS stable?

Inspect Q8150 and U1950 for corrosion.

 

[juhusu]

OK, HERE WE GO.
Only 2 pulses when I connect the charger. Approx 5s between each pulse and then held at 23-24 mA.
VCORE and PLT_RESET_L is pulsing at the same time.
Q8150 and U1950 look super clean.
3v3_S5 / SUS are stable.
Something that I forgot to tell before. the trace between U3510 / 5 and c3510 was broken by corrosion. clean and made a jumper. 0.390V diode mode and 0.028V on that line.

 

[2informaticos]

Check all SPI Bus Series Termination resistors and their traces.
Clean/remove J6100.
Try known good BIOS, just in case.

 

[juhusu]

All SPI Bus Series Termination resistors and traces are good. I don't have another 820-00165 that I know of that works well.
I extracted the bios and saved the original .bin.
Can I do a Clear ME or something similar?

 

[2informaticos]

We already have some clean ME BIOSes posted for such board.

 

[juhusu]

Sorry but I'm new here. Please can you tell me where I can find those files or send me a link for it? thanks for everything Master.

 

[2informaticos]

Search function can help you to gain time.
Just in case, try this.

2015 00165 G940 clean ME fixed ssn.bin

drive.google.com

 

[juhusu]

thank you master. that doesn't work for me. What I could see is that PP5V_S0 is missing. What do you recommend? Thanks.

 

[2informaticos]

Reball SMC, as basic step for boards where corrosion is noted.
If doesn't hekp, try heating CPU with quality flux; 10-15s, untill 180-200 degrees,
No need to melt the balls, just to burn eventually accumulated crap.