Memorex MLT3221 no power

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  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #41
    Re: Memorex MLT3221 no power

    The link that Tom puts up will take you directly to Digikey P/N SF35-TPMSCT-ND page, no need to look up the P/N.
    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

    • CR Designs
      Badcaps Veteran
      • Dec 2012
      • 430
      • USA

      #42
      Re: Memorex MLT3221 no power

      budm, Thank you will order the part,should I order any caps while I'M at it.

      Comment

      • selldoor
        Slow Learner
        • Dec 2010
        • 7870

        #43
        Re: Memorex MLT3221 no power

        As you know how difficult they are to get at I would replace at least any under the heatsinks - they are probably cooked by now If there are not too many on the whole board I would think about replacing all except the Big one.
        Please upload pictures using attachment function when ask for help on the repair
        http://www.badcaps.net/forum/showthread.php?t=39740

        Comment

        • tom66
          EVs Rule
          • Apr 2011
          • 32560
          • UK

          #44
          Re: Memorex MLT3221 no power

          I am still suspicious of the big cap as it does not depress, right?
          Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
          For service manual, schematic, boardview (board view), datasheet, cad - use our search.

          Comment

          • CR Designs
            Badcaps Veteran
            • Dec 2012
            • 430
            • USA

            #45
            Re: Memorex MLT3221 no power

            Originally posted by selldoor
            As you know how difficult they are to get at I would replace at least any under the heatsinks - they are probably cooked by now If there are not too many on the whole board I would think about replacing all except the Big one.

            How do you remove the heat sink? It looks like the taps on the corners can pryed up and the components that are attached can be unscrewed,is that the way to remove it?

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK

              #46
              Re: Memorex MLT3221 no power

              It is very difficult without a good soldering iron -- I would leave it in case you damage the board.
              Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
              For service manual, schematic, boardview (board view), datasheet, cad - use our search.

              Comment

              • Techstar
                Tv Restoration
                • Dec 2012
                • 122
                • United Kingdom.

                #47
                Re: Memorex MLT3221 no power

                A solder gun can work better some times when removing heat sinks, sometimes i use a 60 watt gun for me it seems to get more heat sunk.

                Comment

                • selldoor
                  Slow Learner
                  • Dec 2010
                  • 7870

                  #48
                  Re: Memorex MLT3221 no power

                  Originally posted by CR Designs
                  How do you remove the heat sink? It looks like the taps on the corners can pryed up and the components that are attached can be unscrewed,is that the way to remove it?
                  Sorry - thought you had already taken it off - read your post then retiredcaps
                  post and thought you had replaced the startup. As Tom says perhaps just leave it til you have to do it. Replace any accessible middle size caps.
                  Please upload pictures using attachment function when ask for help on the repair
                  http://www.badcaps.net/forum/showthread.php?t=39740

                  Comment

                  • Dgtech
                    E. Technician
                    • Apr 2009
                    • 1462
                    • Steeler

                    #49
                    Re: Memorex MLT3221 no power

                    I can't believe its been two years since I replaced the diode in that set. That set was the best 32 screen I've ever seen. I kept that one for myself. It's still running great. In fact, it's on right now in my bedroom.

                    This one has a history of breaking down after being used as a monitor (VGA). I'm curious, were you using yours this way?
                    The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK

                      #50
                      Re: Memorex MLT3221 no power

                      What's the LCD panel in it? I think this one uses AUO. Which isn't too bad, probably 5th best LCD panel in world (Order: Panasonic, Sharp, LG, Samsung, AUO, [big space], Chi-Mei, Chungwha)
                      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                      Comment

                      • CR Designs
                        Badcaps Veteran
                        • Dec 2012
                        • 430
                        • USA

                        #51
                        Re: Memorex MLT3221 no power

                        Received the diode today. Installed it and the Tv Started right up. It was a bad diode. Thanks for all the help on getting it running again !!!TV has been on now for 6 hours!!!

                        Comment

                        • selldoor
                          Slow Learner
                          • Dec 2010
                          • 7870

                          #52
                          Re: Memorex MLT3221 no power

                          That is great news - thanks for reporting back.
                          Please upload pictures using attachment function when ask for help on the repair
                          http://www.badcaps.net/forum/showthread.php?t=39740

                          Comment

                          • vinceroger69
                            Badcaps Legend
                            • Mar 2012
                            • 6714
                            • uk

                            #53
                            Re: Memorex MLT3221 no power

                            yes that's great news glad it was a cheap easy fix and another set saved from the landfill site.

                            Comment

                            • budm
                              Badcaps Legend
                              • Feb 2010
                              • 40746
                              • USA

                              #54
                              Re: Memorex MLT3221 no power

                              Glad you got it fixed cheaply, thanks for the feedback.
                              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

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