Acer Aspire 7551 Turn off when try to read HDD

[Zoran_Velinov]

Hi. This notebook turn off before boot, when try to read hdd.

I try:

New hdd but same.

Boot from bootable USB Flash. Everything is ok.

Something around 3V/5V controller?

Thanks.

[Zoran_Velinov]

Re: Acer Aspire 7551 Turn off when try to read HDD

I found. It was North Bridge. Only reflow. But now i somehow made another problem. Signal for power button is grounded all the time. Button is ok.

[Pragmatiko]

Re: Acer Aspire 7551 Turn off when try to read HDD

I found. It was North Bridge. Only reflow. But now i somehow made another problem. Signal for power button is grounded all the time. Button is ok.

Maybe short under north bridge during reflow.

[Zoran_Velinov]

Re: Acer Aspire 7551 Turn off when try to read HDD

2-3 times was ok. It happen after i decide to remove heat sink to put thermal grease. But maybe something in connector for button on mother board because some conductive strip on flat cable for power button was pull off. I will check today.

[Zoran_Velinov]

Re: Acer Aspire 7551 Turn off when try to read HDD

Its ok. Wrong pin counting , and bad flat cable for power button board. Solved.