820-00165 strange problem

[2informaticos]

Very likely leakage on DCIN side.
If D7012 is good (not shorted), then change Q7180.

 

[Patricia]

Thank you dos informaticos , I see that after 10 months I was away nothing changed , its still you who works
I did check the D7012 for a short and it was ok , and replaced the Q7180 and it is unfortunately the exact same symptoms , a short green light
every 3 seconds and on the desk power supply it works just fine

Thanks for the reply

 

[2informaticos]

Check if R7012 has correct value (ohm scale).
Also describe PPDCIN_G3H behavior, with original charger.

 

[Patricia]

R7012 is 68k , PPDCIN_G3H is starting with 5,2v and going down slowly to 3.9v , with desk power supply its 18.4v as it should be ....

 

[Patricia]

14.85 is the marked v on the charger but on the schematics its marked 18.5 v and that was what i refered to
The R7180 was hard to measure .... because it wasnt there Put in a 100k there and all works fine
Thank you dos informaticos for your help

 

[2informaticos]

Always respect voltage marked on the original charger.
You may trigger VD0R sensor sometime and SMC refuses to start in such case.