820-3462A A1425 2012 13" Retina No s5 rails

Melvinzill

Member
Hi, have this 820-3462A A1425 2012 13" Retina Board that used to have a shorted SMC. Well I finally tracked one down an replaced it. Board still won't work though. It does have the orange light (so 3V42 definitely working) and PPBUS_G3H is normal. Any suggesting? Which rails should I post?
 

2informaticos

Administrator
Staff member
Did you solder SMC from 3462 board too?

Post basic signals, like SMC_RESET_L, PM_BATLOW_L, SMC_PM_G2_EN.
Be sure to use proper charger.
 

2informaticos

Administrator
Staff member
"PM_BATLOW_L is 0V
SMC_PM_G2_EN is also 0V"
Looks like SMC issue.
You may need to reball/change it.

Check first L4901 and R4902.
Post AVREF_SMC and 1V2_S5.
Inspect for corrosion around Y5010; surrounding components and traces...
 
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