Lenovo G560 LA-5752p NO Power No Light

[piernov]

Re: Lenovo G560 LA-5752p NO Power No Light

SUSP# comes after SLP_S3#, that comes after SLP_S4# and SLP_S5# itself. So check the SLP_S3#, SLP_S4# and SLP_S5# signals.

[ganeshcell]

Re: Lenovo G560 LA-5752p NO Power No Light

i got this prblm in dell 3521.
SUSP# was not generating frm io
in that case my PCH_RTCRST# was 0v
it should be 3v
rtcvcc to pch_rtcrst# 20k resistor was open
Simply check 32.786mzh at rtc crystal
i dont know it will work on ur lenovo but u may check

[ganeshcell]

Re: Lenovo G560 LA-5752p NO Power No Light

Yes Piernov is very right

[mcplslg123]

Re: Lenovo G560 LA-5752p NO Power No Light

SUSP# comes after SLP_S3#, that comes after SLP_S4# and SLP_S5# itself. So check the SLP_S3#, SLP_S4# and SLP_S5# signals.

Thanks for replying@piernov. I know that but unfortunately SLP_S3#,SLP_S43 and SLP_S5#-All are missing.

[mcplslg123]

Re: Lenovo G560 LA-5752p NO Power No Light

i got this prblm in dell 3521.
SUSP# was not generating frm io
in that case my PCH_RTCRST# was 0v
it should be 3v
rtcvcc to pch_rtcrst# 20k resistor was open
Simply check 32.786mzh at rtc crystal
i dont know it will work on ur lenovo but u may check

Checked RTCVCC and is not shorted. Though PCH_RTCRST# is shorted .

[mcplslg123]

Re: Lenovo G560 LA-5752p NO Power No Light

Finally arrived at the conclusion that PCH is bad as PCH_RTCRST# shorted on the PCH side on CLR_P3 pad. Removed PCH and shorting is gone. I've replaced the PCH and got display.
Thanks to all for your valuable time.

[madsay]

Re: Lenovo G560 LA-5752p NO Power No Light

1,5volt on my motherboard is broken so it turns 3 sec on and off. Please check your PQ48 for short circuit

[aarya2611]

Re: Lenovo G560 LA-5752p NO Power No Light

I gotbthe same issu .susp# is 1.5v .

[arka444]

Re: Lenovo G560 LA-5752p NO Power No Light

Guys Check PU7, In this board, most of the time the lower pins of the ISL gets corroded. PU7 Generates 1.1v through PL8