Lenovo ideapad Y510P not power on .

[lapfix]

Hello my friends.

I have this ideapad Y510P not power on , consumption = 0.027 amp.
Power sequence Page 67 , all steps are ok until n6 = NO SLP_S3#/
SLP_S4# / PM_SLP_S5# /SLP_A#.

Conclusion Faulty PCH or i must verify other voltages ..how to be sure that my issue is PCH.
Thank you

[mcplslg123]

Re: Lenovo ideapad Y510P not power on .

So you mean its not triggering at all??Or you mean its trigerring without display??

[lapfix]

Re: Lenovo ideapad Y510P not power on .

Hello my friend..at first 0.001 amp when power button trigger 0.027 amp

[mcplslg123]

Re: Lenovo ideapad Y510P not power on .

The deflection in consumption is indicative of RTC Fault(very likely but may be other reason). So do check RTC requirement thoroughly and not just RTCRST#/SRTCRST#. BATLOW signal checked?? Its required for PCH to function properly.

[lapfix]

Re: Lenovo ideapad Y510P not power on .

Hello my friend , sorry to be late , i take the voltages that you asking for , i think all is normal .

SM_INTRUDER = RH149 = 2.818v /2.58v ( voltages from 2 pads of resistance )
PCH_INTVRMEN = RH150 = 2.820v /2.739v ( voltages from 2 pads of resistance )
PCH_SRTCRST = JME1 = 2.816v
PCH_SRTCRST = JCMOS2 = 2.815v
BATLOW = RH246 = 3.317v / 3.314v ( voltages from 2 pads of resistance )

[mcplslg123]

Re: Lenovo ideapad Y510P not power on .

Hmm... All measurements seems good . Perhaps a dead PCH. maybe others can also advise.

[lapfix]

Re: Lenovo ideapad Y510P not power on .

Ok thank you , have 2 questions :

1 * You don't have a doubt for Y2 and Y3 !

2 * RTC section must be check for many label ; how about Asus !

[mcplslg123]

Re: Lenovo ideapad Y510P not power on .

I dont doubt Y2/Y3 after observing the consumption on dc supply. Crystal/clock comes much later into play to help generate Vcore. So ruled out.

RTC-just put these keywords in schematic and check each and every point.