Macbook pro 15, 820 2330-A, no green light and no turn on

[Noguinfor]

Hi guys,

Have a board 820 2330-A what i dont have green light.
have all voltages any less PP5V_S5_REG.. This lane have a short to ground ...

any ideas what i look for?

 

[dukefawks]

Green light is first thing you need. Voltage on pin 5 of U6915? I assume 3V42 is present on L6995!

 

[Noguinfor]

ya i know. But this 1 wire circuit i don't understand very much. is different for example bard 820 - 2879 ... i have 17v pin 5 of U6915. and ya i have 3V42 on L6995.

 

[dukefawks]

17V is ok. SMC might not be running, what is your PPBUS voltage 12.3 or 12.56?

 

[Noguinfor]

First off all tank you for answering,

Louis is right, the problem is it the fuking U6915 ... i have a high voltage on pin 5 Q6915.. , i dont have the component in stock and dead boards.. i will have to wait 2/3 weeks for component.

Duke i have 12.69 on PPBUS. Its dead SMC?

 

[dukefawks]

u6915 can be found on every macbook board from 2009 or earlier. It's also on the old A1181 white macbook board.