820-00138 no power no green light

Djsp

Member
I replaced SMC, but now it has problems at startup the battery is detected but it is not charged, is it u7100?
 

2informaticos

Administrator
Staff member
What is exact PPBUS_G3H w/ and w/o battery connected?
Of course, charger must be always connected.

If not good, check voltage and diode mode to ground at SCL/SDA lines of battery bus.
 

2informaticos

Administrator
Staff member
First be sure battery is good, or test with known good one.
If still the same, change U7100.
Solder another SMC as last option.
 

Djsp

Member
When it enters the operational theme if it tells me that the battery has 86 cycles, can it also depend on a bad welding of the SMC?
 

Djsp

Member
I checked SMBUS_SMC_5_G3_SCL and SMBUS_SMC_5_G3_SDA with the oscilloscope there is communication, so SMC should be ok now I try to replace the dc in and then I try with U7100
 
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