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Lenovo Thinkpad X1 Extreme Gen 4 Wistron 213015-1

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    #1

    Lenovo Thinkpad X1 Extreme Gen 4 Wistron 213015-1

    This laptop had a hard fall I was told. I'm not able to read the serial number.
    I would get 3 white lights at the power button when plugged in and then off, but still an orange charge light(most of the time).
    PLC501 gets hot, into the 60s C. It has 1.24v PRC307 is the next hot thing around 40c and PUC301 get's a bit warmer than the other 4 PUs next to it
    PLC301 has resistance to ground of .55ohms but i'm not experienced enough to know if this is normal for such gpus? Voltage on these coils is .75v
    Otherwise i wasn't able to find anything else getting warm even when injecting .7v in the circuits i mentioned.
    One of the ram slot clasps was desoldered from the board which led me to look at the slot pins and some were also loose. I tried resoldering both slots, but behavior was the same afterwards.
    After I noticed pads that looked lke something was broken off at D2601 so i added a diode. After that It would give a solid white power button led, spin fans for a number of seconds, pch and gpu would get warmer than before, but then it never progresses. I've never seen the cpu get warm.
    Can anyone help me figure this out?
    I'm attaching two bios dumps in case anyone is able to check them. Thanks.
    Attached Files
    Tags: None
    #2
    Originally posted by badcapjerboard View Post
    This laptop had a hard fall I was told. I'm not able to read the serial number.
    I would get 3 white lights at the power button when plugged in and then off, but still an orange charge light(most of the time).
    PLC501 gets hot, into the 60s C. It has 1.24v PRC307 is the next hot thing around 40c and PUC301 get's a bit warmer than the other 4 PUs next to it
    PLC301 has resistance to ground of .55ohms but i'm not experienced enough to know if this is normal for such gpus? Voltage on these coils is .75v
    Otherwise i wasn't able to find anything else getting warm even when injecting .7v in the circuits i mentioned.
    One of the ram slot clasps was desoldered from the board which led me to look at the slot pins and some were also loose. I tried resoldering both slots, but behavior was the same afterwards.
    After I noticed pads that looked lke something was broken off at D2601 so i added a diode. After that It would give a solid white power button led, spin fans for a number of seconds, pch and gpu would get warmer than before, but then it never progresses. I've never seen the cpu get warm.
    Can anyone help me figure this out?
    I'm attaching two bios dumps in case anyone is able to check them. Thanks.
    You must post serial number

    Comment

      #3
      Sorry found it SN: PW020ZLW

      Comment

        #4
        Originally posted by badcapjerboard View Post
        This laptop had a hard fall I was told. I'm not able to read the serial number.
        I would get 3 white lights at the power button when plugged in and then off, but still an orange charge light(most of the time).
        PLC501 gets hot, into the 60s C. It has 1.24v PRC307 is the next hot thing around 40c and PUC301 get's a bit warmer than the other 4 PUs next to it
        PLC301 has resistance to ground of .55ohms but i'm not experienced enough to know if this is normal for such gpus? Voltage on these coils is .75v
        Otherwise i wasn't able to find anything else getting warm even when injecting .7v in the circuits i mentioned.
        One of the ram slot clasps was desoldered from the board which led me to look at the slot pins and some were also loose. I tried resoldering both slots, but behavior was the same afterwards.
        After I noticed pads that looked lke something was broken off at D2601 so i added a diode. After that It would give a solid white power button led, spin fans for a number of seconds, pch and gpu would get warmer than before, but then it never progresses. I've never seen the cpu get warm.
        Can anyone help me figure this out?
        I'm attaching two bios dumps in case anyone is able to check them. Thanks.
        Try
        Attached Files

        Comment

          #5
          Thank you. First i got a verify error. Then i lowered clock to 16ghz and got reg error. Lowered more got the same. Click image for larger version Name: image.png Views: 42 Size: 32.3 KB ID: 3584264

          Comment

            #6
            Erase chip 2 to 3 time first if still you have an issue change chip

            Comment

              #7
              Not completely sure what's going on. I had issues with new chips also. tried new adapter. Then i found a chip that the programmer ids correctly and it finally programmed successfully. Maybe I need to create a custom chip instead of using a similar id?
              Anyhow, laptop behaved the same with the new file on a different chip. A GD25B256EY

              Comment

                #8
                Mistake. I meant i used a GD25R256EYIG but used id GD25B256EY

                Comment

                  #9
                  Is there any reason this GD25R256EYIG wouldn't be compatible with original MX77L25650FZ4I42?
                  Does PLC501 getting so hot mean it's probably a faulty vram chip?

                  Comment

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