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No Power RX470 8GB - IR3553M

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    No Power RX470 8GB - IR3553M

    Hello to all.

    My personal card, has suddenly died, i was helping for 1 week to folding@home , when the COVID-19 occured. And suddenly it didn't get any power.
    My PSU Titanium grade, and is connected to powerline with UPS.
    So the :voltage: is everytime safe and good.

    Now, i have tested via youtube,that saw some videos from RX470/480 dieing on spot ,that the chip IR3553M is making a connection to ground and dies and takes the Dual fuses,with it.

    I have taken some photos and i am attaching them here to get help from you guys,if you can help me out.

    Indicators.

    Replaced the dual fuse , top right corner (2X 10 A)
    Replaced the bottom IR3553M which had conntected to ground.

    As i saw the 1,2 points in the IR3553M (that i have in the top photo) , 2 should not beep ,and number 1 should beep (solder point) .
    All the IR3553M now, remain silent on leg 2 , and on leg 1 beep.

    I don't see any other faults, but the card still remains cold as dead.

    Any suggestions ?

    Here are extra links for high resolution photo :
    https://imgur.com/a/hAL65R7

    Thank you.
    Attached Files
    Last edited by AccountSaver; 09-16-2020, 01:45 AM.

    #2
    Re: No Power RX470 8GB - IR3553M

    My mistake.
    I found the problem. Hahaha , silly of my self.

    I compared the picture of my RX470 with another RX470 and i saw that i didn't put another Fuse 10A ,bottom left side of the "DVI" connector ,it has a 10A fuse that i had removed it ,and didn't remember it.

    Now,it posts good

    Comment


      #3
      Re: No Power RX470 8GB - IR3553M

      Okay , now new problem.

      Yesterday the card, went by the diagnostics, even Heaven Unique for about 30 minutes,and then i played like 2 hours of Warzone, with max settings.
      The card was normally hot,as usual , and the airflow of the system good as always.

      It suddenly died again.

      I tested today all the other 4x IR3553M all shorted. The bottom fuse as well , it beeps only when you take it out,when you place it on board it doesn't beep.

      I changed and replaced the IR3553M with a new Fuse as well ,and the card still remains dead.

      I see there is 2 x capacitors missing from the IR3553M in line, 2 x really small ones. Can you or someone figure out, why this is happening and how can i measure what capacitor should i use ?

      The picture i attach shows the 2 capacitors,that are missing today.When yesterday they were on place.
      Attached Files

      Comment


        #4
        Re: No Power RX470 8GB - IR3553M

        I measured another capacitor from above,in the same place with target meter at 200nF, showed me 123nF , so the capacitor is 123nF ? Right ?

        Comment


          #5
          Re: No Power RX470 8GB - IR3553M

          You still have this card?


          Tnx

          Comment


            #6
            Re: No Power RX470 8GB - IR3553M

            Originally posted by ziko07 View Post
            You still have this card?


            Tnx
            Yes.

            Comment


              #7
              Re: No Power RX470 8GB - IR3553M

              Can you please check for me is those 4 pins connected to GND?
              And did you solved your card?

              Tnx
              Attached Files

              Comment


                #8
                Re: No Power RX470 8GB - IR3553M

                Originally posted by ziko07 View Post
                Can you please check for me is those 4 pins connected to GND?
                And did you solved your card?

                Tnx
                No i cannot, i don't have it anymore.
                Yes, i had it fixed with my changes.

                Comment


                  #9
                  Re: No Power RX470 8GB - IR3553M

                  Hello,
                  I have almost the same problem as you,
                  Can someone give me an eBay link to the 5KW20 270 16V capacitor,
                  Thanks,
                  Did you fix your card ?

                  Comment


                    #10
                    Re: No Power RX470 8GB - IR3553M

                    Originally posted by Bluedog69 View Post
                    Hello,
                    I have almost the same problem as you,
                    Can someone give me an eBay link to the 5KW20 270 16V capacitor,
                    Thanks,
                    Did you fix your card ?
                    Why is the same question again ?
                    Why doesn't anyone read the thread?

                    Comment


                      #11
                      Re: No Power RX470 8GB - IR3553M

                      Originally posted by Bluedog69 View Post
                      Hello,
                      I have almost the same problem as you,
                      Can someone give me an eBay link to the 5KW20 270 16V capacitor,
                      Thanks,
                      Did you fix your card ?
                      Hello,
                      I have a RX480 8GB

                      I just read your messages and I have a problem also at the same level no voltage at +VDDC and mosfet IR3550 on +CIN and at 0mV in diode mode and almost 0Ohm

                      Any idea?

                      It would be with joy to help if needed too.

                      Comment

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