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Element FLX-3210 no power

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    #1

    Element FLX-3210 no power

    first time poster

    Got this tv for free.

    Symptoms
    when you plug the tv in, the red standby light is lit. When you push power the light turns blue, that's it. No picture, no flicker, no backlight, no buzzing. The only other thing I noticed is a red light on the power board flashes.

    The two caps that traditionally bulge in the upper left corner of the power supply in the picture are not bulged. The really large one looks questionable but this cap doesn't look like the smaller ones so I'm not sure if the top should be domed or not. I don't have the proper capacitor tester to test it.

    I'm not afraid to solder, I have a fluke 87 multimeter. I did check the voltages on com3 (5v, stdby, 20v) and they checked out.

    I can get a used power supply from shopjimmy for $55 if this board isn't fixable BUT I'm looking for some confidence that the issue is actually in the power supply and not the other boards before spending any money. I can get more pictures if needed. Your thoughts?
    Attached Files
    Tags: None
    #2
    Re: Element FLX-3210 no power

    Did you have a close look at the caps under the heat sink? What brand caps are they as well? Remember, they don't have to be bulged to be bad.

    Comment

      #3
      Re: Element FLX-3210 no power

      Originally posted by martyparish View Post
      Did you have a close look at the caps under the heat sink? What brand caps are they as well? Remember, they don't have to be bulged to be bad.
      They are HEC. Didn't see anything bulged. Yeah I know they can be bad but i don't have a esr tester

      Comment

        #4
        Re: Element FLX-3210 no power

        Have you attempted hooking up a video source to see if you get audio? Also, try looking into the screen with a bright flashlight to see if you can make out any image.

        If it were me, I'd try replacing the caps. It won't cost you much.

        One other trick to try is to blow heat from a hair dryer onto the board and try starting it. That has revived a few TVs for me.

        Comment

          #5
          Re: Element FLX-3210 no power

          Hey, I am actually fixing this one.
          On mine, the 450v caps (the ones you mention) are failed though.
          If you have all the voltages, the supply is prob ok, though recap is not a bad idea especially on these megmeet supplies. Make sure it is getting the BL-ON command though from the main. (white wire on the other connector)
          And the red light does not flash on mine. Right next to it is a programmable chip but I have not really looked into what it does.
          Last edited by drpj23; 03-18-2013, 09:28 PM.

          Comment

            #6
            Re: Element FLX-3210 no power

            I would at least take the capacitance reading of those two caps (10uf 450vdc) since bad cap can look normal.
            What DC voltage do you get at the small white connector on the BK_ON pin?
            This TV is also known to have bad ballast caps (small blue caps inside the panel assembly).
            Look at the screen in the real dark room to see if the backlights even flash on for seconds also.

            http://s807.photobucket.com/user/bud...ent%20FLX-3210
            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

              #7
              Re: Element FLX-3210 no power

              Originally posted by budm View Post
              I would at least take the capacitance reading of those two caps (10uf 450vdc) since bad cap can look normal.
              The Fluke original 80 series and 80 series III can only measure up to 5uF. The 80 series V can measure up to 9999uF. So it all depends on what mopar4u has.
              --- begin sig file ---

              If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

              We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

              Please do not post inline and offsite as they slow down the loading of pages.

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              Comment

                #8
                Re: Element FLX-3210 no power

                Sorry for my inexperience but what is the bk_on and what does "make sure it's getting the bl_on command through from the main" mean?

                Comment

                  #9
                  Re: Element FLX-3210 no power

                  My fluke is exactly like the one in this post, just a plain fluke 87, not III series

                  http://www.amazon.com/gp/aw/d/B001TA6CAM

                  Comment

                    #10
                    Re: Element FLX-3210 no power

                    bk_on and bl_on are the same thing. Often they are labeled differently by different manufacturers. That pin is what turns the backlights (BL) to turn on. The main board waits for the command to turn the TV on and if all is well, it sends the signal to BL_ON.

                    A nice closeup picture of the white connector would be great. Close enough that we can read the labels.

                    Comment

                      #11
                      Re: Element FLX-3210 no power

                      I currently have the same set on my bench right now. I get the red standby LED, but nothing more. The PSU is supplying correct voltages at all pins. Does your set have the touch buttons across the front of the bezel? I'm not sure if I have a main board problem or a button board problem. Do I need to push that power button or just swipe my finger over it? Either way, i get nothing.

                      For what it's worth, I had a Polaroid FLM-3232 (basically the same tv but one year older) with the same issue that you are experiencing. A new main board fixed it.
                      Last edited by johnboy1313; 03-19-2013, 06:22 AM.

                      Comment

                        #12
                        Re: Element FLX-3210 no power

                        With your DMM set on the highest VDC setting, put one probe on one leg of the big capacitor and the other probe on the other leg and measure the voltage across the cap with the unit in standby. Press the power button and measure the voltage again. This may not prove anything, but it may at least help me out. On most PSUs the voltage across the big cap is roughly 170V in standby and around 400V at power on. On my FLX-3210, I'm seeing 400V at standby.

                        Comment

                          #13
                          Re: Element FLX-3210 no power

                          Wow, thanks for all the input! I am at work right now and will get answers to all your questions when i get home tonight. Please keep the suggestions coming!

                          Thank you!

                          Comment

                            #14
                            Re: Element FLX-3210 no power

                            nevermind
                            Last edited by johnboy1313; 03-19-2013, 06:34 AM.

                            Comment

                              #15
                              Re: Element FLX-3210 no power

                              I am borrowing a fluke 189 from work, it measures up to 50mF, will this work?

                              Comment

                                #16
                                Re: Element FLX-3210 no power

                                Originally posted by mopar4u View Post
                                I am borrowing a fluke 189 from work, it measures up to 50mF, will this work?
                                Yes. Measure the capacitance with power off and observse the polarity.
                                --- begin sig file ---

                                If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

                                We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

                                Please do not post inline and offsite as they slow down the loading of pages.

                                --- end sig file ---

                                Comment

                                  #17
                                  Re: Element FLX-3210 no power

                                  I just scanned through this post so forgive me if I ask the same question. Did you change out the two caps that usually fail? Also...please check diode D10. It should be in the middle of this board connected to a heatsink. These are the known failures for this set. See the pic for location. Also there is a green fuse near the big cap.
                                  Attached Files
                                  Last edited by Dgtech; 03-19-2013, 01:59 PM.
                                  The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

                                  Comment

                                    #18
                                    Re: Element FLX-3210 no power

                                    Ah, I am glad you remeber about that D10 Dgtech, lucky me, never run into that bad Diode yet just bad caps, but other at badcaps did find bad D10.
                                    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

                                      #19
                                      Re: Element FLX-3210 no power

                                      Originally posted by johnboy1313 View Post
                                      With your DMM set on the highest VDC setting, put one probe on one leg of the big capacitor and the other probe on the other leg and measure the voltage across the cap with the unit in standby. Press the power button and measure the voltage again. This may not prove anything, but it may at least help me out. On most PSUs the voltage across the big cap is roughly 170V in standby and around 400V at power on. On my FLX-3210, I'm seeing 400V at standby.

                                      I got 164 at standby, 394 at power on.

                                      Comment

                                        #20
                                        Re: Element FLX-3210 no power

                                        pulled the two 10uf 450v capacitors. One of them I pulled the lead out while trying to remove it from the board. The other I test and I'm getting .140nF.

                                        Pulled one end of D10 diode out, with the positive lead near the heat sink I get open, with the negative lead near the heat sink I get .452 VDC

                                        Comment

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