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Macbook Air 820-00165-A Ornage light not turn on.

D

Dewanbd

Member
This unit was water damged and see damage around i625 and found the following measurment of i625.
Any help please.

p1=0v
p2=16
p3=4.2
p4=2.8v
p5=1
p6=0
p7=0.5
p8=1.5
p9=0
p10=3.4

p11=3.4
p12=3.4
p13=3.4
p14=3.4
p15=0
p16=8
p17=8
p18=8
p19=5
p20=5

p21=0.5
p22=0
p23=8.6
p24=8.6
p25=12.9
p26=15.1????
p27=2
p28=0v
 
Last edited:
2informaticos

2informaticos

Administrator
Staff member
"p17=8
p18=8"
Post exact value; i.e. 8.22V, or 8.56V...

"p27=2
p28=0v"
Both R7021/22 bad.
Be sure no short to ground at pin 28, after changed them.

BTW,
"i625"
ISL6259...
 
D

Dewanbd

Member
p17=8.61
p18=8.61
i couldnt find r7021/22 and now i found the value ( before i was wrong )
"p27=16.09
p28=16.09v

yes i625is ISL6259.
 
2informaticos

2informaticos

Administrator
Staff member
R7121/22 in this case, but new values are good; forgot about the reistors.
Does it start in SMC bypass mode?
Trigger SMC_ONOFF_L and see if PM_PWRBTN_L drops to 0V at the same moment.
 
D

Dewanbd

Member
dont have ocs, using true rms and see, at PM_SLP_S4_l .22 mv at same time
Also found different voltage at big coils.
 
2informaticos

2informaticos

Administrator
Staff member
Don't need special equipment.
Trigger SMC_ONOFF_L repeatedly and check if any voltage tries to appear at PM_SLP_S4_L signal.
You should get a reading of 1-2V at least, even 3V...
 
Last edited:
D

Dewanbd

Member
Trigger SMC_ONOFF_L repeatedly and check NO voltage trips to appear at PM_SLP_S4_L signal, check couple of time.
 
2informaticos

2informaticos

Administrator
Staff member
If PM_PWRBTN_L reacts, but NO PM_SLP_S4_L reaction at same time, then PCH issue.
Be sure first the PCH gets S5 and SUS voltages...
 
2informaticos

2informaticos

Administrator
Staff member
"PPVOUT_S5_PCH_DCPSUSBYP_R, R0899=1.07v ????"
As per schematic, VOLTAGE=1.05V...

Put good flux and heat PCH.
You may have luck to be only crap under PCH.
 
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