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Asus N53sv not powering on

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    Asus N53sv not powering on

    when i remove bios ic i have all voltages on board (3.3,5 and voltages on bios pins except pin numer one) and when i put it backk all of em are gone
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    #2
    Re: Asus N53sv not powering on

    The cmos battery is in place with a good voltage ?

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      #3
      Re: Asus N53sv not powering on

      yes it is, im really stck with this one.

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        #4
        Re: Asus N53sv not powering on

        Try replacing the BIOS chip with a known good one.

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          #5
          Re: Asus N53sv not powering on

          i did that still the same i chked i put down the bios chip and lift pin one and i have all voltages and other pins of bios chip, but when i connect pin one laptop goes dead

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            #6
            Re: Asus N53sv not powering on

            What is the resistance to ground on pin 1?

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              #7
              Re: Asus N53sv not powering on

              Originally posted by Spider1211 View Post
              What is the resistance to ground on pin 1?
              with red prob on pin 1 i get 0.8 mohm
              with black prob on pin 1 i get 0.4mohm

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                #8
                Re: Asus N53sv not powering on

                mohm = milli ohm
                Mohm = mega ohm

                If your reading is milli ohm, you have a short on that line.

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                  #9
                  Re: Asus N53sv not powering on

                  mega i meant Mohm

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                    #10
                    Re: Asus N53sv not powering on

                    The problem could be with the PCH or EC.Checck by removing R2837,then check voltage on bios pin 1. SL2802 pin 1 goes to pin 101 on the EC through R3050
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                      #11
                      Re: Asus N53sv not powering on

                      Wasn't notified of new comments. Anyways, agreed with SMDFlea. Remove the resistors mentioned and put them back one at a time to narrow down if issue is with PCH or EC.

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                        #12
                        Re: Asus N53sv not powering on

                        Originally posted by SMDFlea View Post
                        The problem could be with the PCH or EC.Checck by removing R2837,then check voltage on bios pin 1. SL2802 pin 1 goes to pin 101 on the EC through R3050
                        thank you for responding
                        i did that already and nothing happend in the end i changed pch and ec on the board and still the same at somepoint i changed charge ic bq24740 and then i had low voltage o pin 8 with bios chip on board and my pwm was getting hot i changed that too and chkd mosfets and didnt find solution. i was hoping fixing this one cuz i was couros why this is happening
                        but the costumer is in a rush so i have to let it go

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