Announcement

Collapse
No announcement yet.

Need help with Samsung LN40E550f7f

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Re: Need help with Samsung LN40E550f7f

    Highjack?? kindreds last post was 3-1-2018, said he wold post back but never did, he/she just left it hanging.
    Last edited by nomoresonys; 07-27-2019, 04:50 AM.

    Comment


      Re: Need help with Samsung LN40E550f7f

      Thanks Guys very much.
      I'll order the kit and post the results.

      Comment


        Re: Need help with Samsung LN40E550f7f

        Verify the kit to make sure the parts numbers of the parts matched what you have. I would replace just the PFC IC first instead of installing everything in the kit.
        Never stop learning
        Basic LCD TV and Monitor troubleshooting guides.
        http://www.badcaps.net/forum/showthr...956#post305956

        Voltage Regulator (LDO) testing:
        http://www.badcaps.net/forum/showthr...999#post300999

        Inverter testing using old CFL:
        http://www.badcaps.net/forum/showthr...er+testing+cfl

        Tear down pictures : Hit the ">" Show Albums and stories" on the left side
        http://s807.photobucket.com/user/budm/library/

        TV Factory reset codes listing:
        http://www.badcaps.net/forum/showthread.php?t=24809

        Comment


          Re: Need help with Samsung LN40E550f7f

          It's correct, I triple check most everything I post.

          Comment


            Re: Need help with Samsung LN40E550f7f

            Originally posted by nomoresonys View Post
            Highjack?? kindreds last post was 3-1-2018, said he wold post back but never did, he/she just left it hanging.
            It just makes things easier when trying to help someone if they start there own post.
            Last edited by R_J; 07-27-2019, 08:38 PM.

            Comment


              Re: Need help with Samsung LN40E550f7f

              I might be a little less confusing but do we really need hundreds of threads about the same tv with the same problem?

              Comment


                Re: Need help with Samsung LN40E550f7f

                should have typed It might be.

                Comment


                  Re: Need help with Samsung LN40E550f7f

                  Hey Guys,
                  Thanks so much for your expert help.
                  Got the parts today and changed ICP801 (FAN7930B)
                  Solved the problem.
                  Plays beautifully now.

                  Thanks again.

                  Comment


                    Re: Need help with Samsung LN40E550f7f

                    Thats good to here it's fixed,
                    So it seems to be if the PFC boosted voltage measures too high (~430vdc), it is a good chance the FAN7930B is defective even though it is boosting the voltage. Likely one of the input opamps is bad.
                    Last edited by R_J; 07-31-2019, 12:18 PM.

                    Comment


                      Re: Need help with Samsung LN40E550f7f

                      Nice.

                      Comment

                      Working...
                      X