820-00165 not turning on

iClub

Member
Hey buddy, I've got this mac that's been repaired, the U5110 has been replaced and components next to it. In the tests the safe is swaying in green and orange and the cooler does not rotate.


Voltage: PPbus_g3h 8.60V; PP3v42_g3h 3.41V; ALL_SYS_PWRGD_R 0V; oscillates (PP5v_s0 0 ~ 1.2V; SMC_PM_G2_EN 0V ~ 3.42).
 

2informaticos

Administrator
Staff member
Surely no pulse at all at ALL_SYS_PWRGD?
Which other big coils pulse, apart of L7520?
 
Last edited:

iClub

Member
ALL_SYS_PWRGD0V;


L7130 PPVBAT_G3H_CHGR_REG / CHGR_PHASE 8,56 / 8,74 V
L7520 P5V_S4RS3_REG_L / PP5V_S4RS3 0V
L7560 P3V3_S5_REG_L / PP3V3_S5_REG_R 1.7 ~ 3.2V oscilando
L7430 PDDR_S3_REG_L / PPDDR_S3_REG_R 0,02V
L7630 P1V05S0_LL / PP1V05_S0_REG_R 0.02V
L7310 PPVCC_S0_CPU_PH1 / CPUVR_PHASE1 0v
L7320 PPVCC_S0_CPU_PH2 / CPUVR_PHASE2 0v
 

2informaticos

Administrator
Staff member
Please, find a better way to translate your messages, if you need help.
I cannot help properly, if I cannot understand your messages.

What this really means???
"the safe is swaying in green and orange"
Do you get steady orange light?
Probably not (nut not sure) and check SMC_RESET_L.
If not steady high, you still have problems around U5110; post its voltages...
 

iClub

Member
sorry, i'm looking for other translators to make my problem easier to understand. "the safe is swaying in green and orange". it means that the led light is oscillating between green and red. when i get to the service i will check SMC_RESET_L. I apologize again for not being able to translate Portuguese to English correctly.
 

iClub

Member
SMC_RESET_L 3.31V
U5110:
1- 3,42V
2- GND
3- 3,43V
4- 2.94V
5 - 3,27V
6- 3,41V
7 - 3,42V
8 - 2,95V.

When you trigger SMC_ONOFF_L the magsafe light turns green.
 

2informaticos

Administrator
Staff member
"When you trigger SMC_ONOFF_L the magsafe light turns green."
Looks like SMC reset.
Are you working with the board alone on the desk?
Disconnect trackpad and use R5115/16 pads instead...
 

iClub

Member
"Magsafe light still switch from orange to green then?" no, it stabilized. after I checked it had broken tracks near U5110, the magsafe light stabilized.
I noticed that pp3v3_sus is between 0V and 1V oscillating and the u7840 component is oxidizing, will it be the defect ?
 

2informaticos

Administrator
Staff member
You must clean/replace each oxidized component.

3V3_S5 is now stable?
Post again voltages, after you've got Magsafe light steady.
 

iClub

Member
23- oscillates between 8.55 and 8.59V
12 - oscillating, I can't know what value
13- oscillating tb between 1.7 and 0.9V
22- 3.28V
29 - oscillating between 4 and 3.7V
21- oscillating between 1.7 and 3.3V
 

iClub

Member
resolved after running the SMC again, on the first attempt, I think there was a missing component sold, because it gave 8.18V in the PPBUS, I redid it again as sold and solved. Thank you friend !!!
 
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