LENOVO G500, LA-9632P, no power up

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  • Sraros
    Badcaps Veteran
    • Jan 2017
    • 223
    • Greece
    #1

    LENOVO G500, LA-9632P, no power up

    Hello I have this Lenovo laptop with a problem in powering on. At first the laptop would come on but sometimes it took more than 5 minutes to show the Lenovo logo and then load bios and eventually open.
    Now it tries to open but after 5 seconds it shutdowns and then restarts and shutdowns again in a constant loop.
    I isolated completely the board by leaving only the CPU and RAM on it. RAM is two modules, I removed them and put another known good working module from another laptop with same results.

    If I remove completely the RAM modules the laptop powers and stays on.

    Checking around the voltages I found sth if it means anything...
    Between PQ501 and PQ502 with any ram connected the voltage spikes to above 100V for a second before the laptop shutdowns. If no RAMs connected the voltage remains below 1,5V.
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