[SOLVED]820-2879 No power green light ok no orange light

[aurel476]

PP3V42_G3H 3,405V
PPBUS_G3H 0,478V
R7021/22 9,8 ohm
R7005 20,3 ohm
R7010 9,32K
R7011 30,15K
R7052 0,1 ohm
R7051 2,4 ohm
17/18 of U7000 3 ohm
27/28 of U7000 20 ohm

R5087 297K (need 470K replaced same value 297K)
SMC_BC_ACOK line 294K
CHGR_ACIN 3,98/4,01V light fluctuation slow
CHGR_DCIN 16,75V
SMC_RESET_L 3,40V
SMC_BC_ACOK 3,24/3,21V

With good battery know,
i plugge charger (battery connected) green light switch off for 1seconde and return to green light no orange light bad smc ?

 

[dukefawks]

Resistance to GND on PPBUS? Check U7200 area too

 

[aurel476]

resistance to GND on PPBUS line 1,06M and decrease, resistance around U7200 area fine

board startup only if battery plugged with charger, ppbus at 10,95 with battery plugged

 

[aurel476]

now replaced U7000 board startup without battery with ppbus 12,25V

but battery no charging and no orange light, no power from battery

PPBUS_G3H line battery only 10,80V

 

[larossmann]

In diode mode, red probe to ground, black probe to pin 2 of R5280 , what do you get? Same for pin 2 of R5281.

Either the U7000 you put on is bad, The SMC is bad, or the battery indicator thing is bad. PPBUS_G3H being 12.25v means the SMC data line with the U7000 and the battery isn't working.

 

[dukefawks]

Is battery indicator doing anything when pressed?

 

[aurel476]

In diode mode pin 2 of R5280 0,551V and for pin 2 of R5281 0,537V

battery indicator not work when pressed, work from another good board know

 

[larossmann]

your SMC is fried

 

[aurel476]

smc replace exactly same problem
try again replace U7000 ?

 

[dukefawks]

Replace U7000. Measure both data pins of the battery before placing back a NEW U7000.

 

[aurel476]

replace again U7000 same problem,

replace again new smc again it work thanks solved