820-2530-A - Green light but wont turn on

[menatwork]

Ppbus_g3h - ok

 

[aprendiz]

If you have PP3V3_S5 present, i guess should be a bad C7771

 

[larossmann]

Only 15" 2009 have that problem. 13" are unaffected by the cap plague. If 1.05v is present on C7771, you will have to start looking elsewhere.

Does PM_SLP_S4_L go up to 3.3v when you press power button? Do the rest of the power rails in the machine work? There's a lot more here than JUST PPBUS_G3H!

 

[dukefawks]

Voltage on pin 5 of U6901? Is it possible to power it on in SMC bypass mode? Remove power and battery, press power button and insert AC adapter, keep holding power button for another 5 seconds. Release it and press it again.

 

[Tony Tone]

I have a question on this one. I do not get 3.3V when I press power. But if I put into SMC bypass I get 3.3V. (On PM_SLP_S4_L)