820-00165 no power

[2click]

Hi, I´m working on this board that is staying at .02 A

ppbus_g3h = 12.59
pp3v42_g3h = 3.4
smc_pm_g2_en = pulsing 3.3
pp3v3_s5 = Pulsing 3.3

already changed smc and no change...

 

[2informaticos]

Check for short on all secondary voltages; all big coils, also pages 57 & 58.

 

[2click]

no short to ground, pm_slp_sus_l pulsing too... bad sign right?

 

[2click]

pprtc_g3h is unstable, when I remove R1300/R1303 ppvrtc_g3h is 3.3v. PCH problem?

 

[2informaticos]

3V42_G3H and PPBUS_G3H steady voltage?
Is the battery charging?
Tried SMC bypass mode?

Remove R7552 and check if SMC_PM_G2_EN still pulses; also check 3V3_S5.

 

[2click]

pp3v42_g3h stable, ppbus_g3h when F7000 in place goes to 8.68v and goes down to 8.58v
smc bypass doesn´t work, the board stays at ,010 amps
removed R7552 and SMC_PM_G2_EN still pulsing... PP3V3_S5 pulsing too...

 

[2informaticos]

Test what happens disconnecting LIO flex; keep only power cable connected to LIO board.

 

[2click]

same behavior...

 

[2informaticos]

5V_S5 pulsing too?
Check for short there.

SMC_RESET_L steady high?

 

[2click]

5v_s5 not pulsing steady 5v
SMC_RESET_L = 3,3v

 

[2informaticos]

5V5_S5 steady with pulsing SMC_PM_G2_EN???
Are you sure?
Post U7501 basic voltages; pins 23, 12, 13, 22, 29, 21.