Emerson LF320EM4 A after surge

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  • Rjj22783
    New Member
    • Aug 2014
    • 7
    • Usa

    #1

    Emerson LF320EM4 A after surge

    Hello everyone, I have an Emerson tv that recently got damaged due to a lightning strike. It has picture and sound but I heard a buzzing sound coming from the back. i opened up the tv and traced it to a blown capacitor. now I have no expeirience with electronics, but the field had always interested me. anyway I am trying to find a replacement capacitor but ant find the values on the capacitor itself, I dont think. I hope the picture helps. Thank you in advance for any help or information.
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  • selldoor
    Slow Learner
    • Dec 2010
    • 7870

    #2
    Re: Emerson LF320EM4 A after surge

    The values will be on the other side. CARE when handling - set off and unplugged - even then you should test across the legs with a multimeter on volts DC 600.
    It is probably 100uf 400volts

    They are usually glued down?
    Please upload pictures using attachment function when ask for help on the repair
    http://www.badcaps.net/forum/showthread.php?t=39740

    Comment

    • Rjj22783
      New Member
      • Aug 2014
      • 7
      • Usa

      #3
      Re: Emerson LF320EM4 A after surge

      Yes, it is glued down, any tips on removing it without damaging anything? By the way, thank you for such a quick reply and the information.

      Comment

      • SteveNielsen
        Retired Tech
        • Jun 2012
        • 2327
        • USA

        #4
        Re: Emerson LF320EM4 A after surge

        A small amount of force prying on the non-lead end should free the cap from the glue. The only caution in that is to not damage the board with the tool used to pry it off.

        Comment

        • truep
          Badcaps Veteran
          • Aug 2010
          • 373
          • USA

          #5
          Re: Emerson LF320EM4 A after surge

          Why do you think it's bad? Those rarely fail. If it's buzzing, the rectifier may have one side out Check the voltage.
          Set meter for 600V, check across the two pins. Be careful NOT to touch any of the heat sinks as they will be hot and can give a nasty shock!!
          Last edited by truep; 08-03-2014, 09:05 AM.

          Comment

          • Rjj22783
            New Member
            • Aug 2014
            • 7
            • Usa

            #6
            Re: Emerson LF320EM4 A after surge

            I should have posted a pic of the bulge in the capacitor, also leaking.

            Comment

            • selldoor
              Slow Learner
              • Dec 2010
              • 7870

              #7
              Re: Emerson LF320EM4 A after surge

              Originally posted by Rjj22783
              I should have posted a pic of the bulge in the capacitor, also leaking.
              Hahahahahah - yes you should - at least you dont have to worry about
              damaging it - just snip the legs and it might twist off the glue.
              As it has leaked you should clean the area up with Ipa


              Also perhaps test the rectifier - in case it has been damaged.
              Last edited by selldoor; 08-03-2014, 09:36 AM.
              Please upload pictures using attachment function when ask for help on the repair
              http://www.badcaps.net/forum/showthread.php?t=39740

              Comment

              • Rjj22783
                New Member
                • Aug 2014
                • 7
                • Usa

                #8
                Re: Emerson LF320EM4 A after surge

                got it off, labeled 200v 330 85c. any recommendations as far as where to get one? thanks to all for the help by the way.

                Comment

                • SteveNielsen
                  Retired Tech
                  • Jun 2012
                  • 2327
                  • USA

                  #9
                  Re: Emerson LF320EM4 A after surge

                  That's a 330uF 200v general purpose cap, should be easy to find and inexpensive. I agree you should check the rectifier and also check that fuse, F602.

                  Comment

                  • Rjj22783
                    New Member
                    • Aug 2014
                    • 7
                    • Usa

                    #10
                    Re: Emerson LF320EM4 A after surge

                    Going to check both, it seems that there aren't really any stores that stock capacitors, looks like everything is online, lol. Does that seem about accurate?

                    Comment

                    • SteveNielsen
                      Retired Tech
                      • Jun 2012
                      • 2327
                      • USA

                      #11
                      Re: Emerson LF320EM4 A after surge

                      Yep. Actual on the boulevard electronics parts stores are a dying business.

                      Comment

                      • selldoor
                        Slow Learner
                        • Dec 2010
                        • 7870

                        #12
                        Re: Emerson LF320EM4 A after surge

                        200v - must be just made for the US market.

                        Hmm there doesnt seem to be an actual rectifier on this board it is 4 diodes
                        Please can you post a good clear picture of the top and bottom of the board
                        using manage attachments jpgs less than 3mb work
                        Last edited by selldoor; 08-03-2014, 11:20 AM.
                        Please upload pictures using attachment function when ask for help on the repair
                        http://www.badcaps.net/forum/showthread.php?t=39740

                        Comment

                        • selldoor
                          Slow Learner
                          • Dec 2010
                          • 7870

                          #13
                          Re: Emerson LF320EM4 A after surge

                          Sorry just another thing - dont get one from ebay and dont get one from radioshack
                          Please upload pictures using attachment function when ask for help on the repair
                          http://www.badcaps.net/forum/showthread.php?t=39740

                          Comment

                          • kev1n69
                            et1984
                            • Jul 2012
                            • 13
                            • usa

                            #14
                            Re: Emerson LF320EM4 A after surge

                            And make sure to get the 105 degree version for longevity the 85 degree is obviously not rated high enough as it vented.

                            Comment

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