E470i-A0 No power diming power light

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  • Anglngr9
    Member
    • Dec 2017
    • 14
    • United States
    #1

    E470i-A0 No power diming power light

    Hello guys in hope for someone to have the answer to my problem I have decided to start this thread, I have a E470i-A0 with board 0171-2271-5032 or 3547-0852-0150 (2B) I have done some research on thi tvs and they all seem to share a common problem the eeprom, I ordered the eeprom for a Vizio E420-A0 thinking that this might fix my issue, once I got it I went ahead trying to locate the eeprom to change and could not find it, my board does not have the US4 or US5 labeled on it the only eeprom I found are 5 of them labeled as UP5 UP3 UL1 UH11 UH10 and i have no Idea which one it is to be changed, I was about to switch the UL1 since its the only one that is not labeled with similar letters, but I wanted to see maybe a more educated mind might have a solution to this problem, now I did some reading online and i found a webste whre they offer the dupms for the e420-a0 and I asked the owner if it would help me with my problem he didnt tell me for sure that it will but mentioned that this models share the same issue and might help, I wanna give it a try and hopefully get this working... I have attached pictures of my board and the eeproms for you guys to take a look at it, thank you so much
    Attached Files
    Last edited by Anglngr9; 12-14-2017, 01:23 PM.
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    • Anglngr9
      Member
      • Dec 2017
      • 14
      • United States
      #2
      Re: E470i-A0 No power diming power light

      UP3 and UP5 are labeled as LA8040JG after I did some research I found that its a Synchronous Step-Down Converter which from what I know might not be what I am looking for (might be wrong)

      the other UP5 and UP3 have a label marked as ATMLh342 when i did research on that i found that both are Two-wire Serial EEPROM I am not sure if this might me the ones I have to change and if so which one?

      and last but not least UL1 i have the APM4317 which says its a Power Management in Notebook Computer,Portable Equipment and Battery Powered Systems.

      thanks

        Comment

        • R_J
          Badcaps Legend
          • Jun 2012
          • 9514
          • Canada
          #3
          Re: E470i-A0 No power diming power light

          Did you look under the shield?

            Comment

            • Anglngr9
              Member
              • Dec 2017
              • 14
              • United States
              #4
              Re: E470i-A0 No power diming power light

              Originally posted by R_J
              Did you look under the shield?
              I did no eeprom there I may add that i already tried with a working power supply and it didnt work as well
              Last edited by Anglngr9; 12-14-2017, 03:59 PM.

                Comment

                • diif
                  Badcaps Legend
                  • Feb 2014
                  • 6978
                  • England
                  #5
                  Re: E470i-A0 No power diming power light

                  It seems there are two different types of mainboard in the E470i-A0 and you brought the eeprom for the one you don't have.

                    Comment

                    • Janja4ever
                      New Member
                      • Dec 2017
                      • 1
                      • United States
                      #6
                      Re: E470i-A0 No power diming power light

                      help m epls

                        Comment

                        • Anglngr9
                          Member
                          • Dec 2017
                          • 14
                          • United States
                          #7
                          Re: E470i-A0 No power diming power light

                          I have taken pics of the chips underneath the plate, I have come to terms with the fact these tvs come with different boards wish I knew this before anyway here are the pics, I am inclined to think US2 is the one with trouble as when I did some search I found tgat is nand memory
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