Lenovo Legion 5 Pro - NM-D601 REV1.0 Turns off with battery conected

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  • judamex
    Active Member
    • Jan 2021
    • 183
    • Mexico

    #41
    Originally posted by mcplslg123
    pin15 rises to 3.3V when battery is dosconnected?
    Pin19 & 20 should read same voltage.
    Yes, pin 15 goes up to 3V when I only connect the charger, it's in the table in post #19.
    pins 19 and 20 usually have the same voltage, it can also be seen in the tables I shared​

    Comment

    • judamex
      Active Member
      • Jan 2021
      • 183
      • Mexico

      #42
      Originally posted by mcplslg123
      pin15 rises to 3.3V when battery is dosconnected?
      Pin19 & 20 should read same voltage.
      Yes, pin 15 goes up to 3V when I only connect the charger, it's in the table in post #19.
      pins 19 and 20 usually have the same voltage, it can also be seen in the tables I shared​

      Comment

      • mon2
        Badcaps Legend
        • Dec 2019
        • 14031
        • Canada

        #43
        Please review your test results again.

        If the battery IS connected, pin 15 should be close to 0 volts.
        If the battery IS NOT connected, then pin 15 should be 3v3.

        Do have the adapter connected as well.

        Can you confirm this?

        Comment

        • judamex
          Active Member
          • Jan 2021
          • 183
          • Mexico

          #44
          Originally posted by mon2
          Please review your test results again.

          If the battery IS connected, pin 15 should be close to 0 volts.
          If the battery IS NOT connected, then pin 15 should be 3v3.

          Do have the adapter connected as well.

          Can you confirm this?
          I checked the mosfets again and the result remained in Ohms,

          I checked Pin#15 with battery it measures about 0.3
          Pin#15 and without battery it reaches 2.93

          When I repositioned the PQ5404 and PQ5406 mosfet, a symptom was added that I had not noticed, when I connect the charger together with the battery it turns on by itself.​

          Comment

          • judamex
            Active Member
            • Jan 2021
            • 183
            • Mexico

            #45
            Originally posted by mon2
            Please review your test results again.

            If the battery IS connected, pin 15 should be close to 0 volts.
            If the battery IS NOT connected, then pin 15 should be 3v3.

            Do have the adapter connected as well.

            Can you confirm this?
            I rectified the voltages and again everything is as in the tables. Tomorrow I will monitor the behavior of each pin with the oscilloscope. I will upload any news.

            Comment

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