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Toshiba regza 52" sound no picture

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    Toshiba regza 52" sound no picture

    Our 52" Model # 52RV520U has sound but no picture. Turns on. Green light is lit at bottom of TV face but screen is black. Which panel of the three major one in back of TV would need to be replaced? Appreciate any help or advice.
    This happened when our Dish service was giving us issues. The picture was freezing (just like you paused it) and was in that mode for a while as the Dish techs were in basement trying to diagnose the problem. When they left the basement flat screen was working but the Regza in upstairs living room ended up black screen with sound. No menu, nothing. You can even change to different channels but only get sound. At first I thought it was just a coincidence. I moved smaller flat screen from down stairs to living room until I could repair the Regza. The Dish issue returned that evening and I had dozed off. When the freeze issue happened in the past I would simple return to previous channel and it would start working again. I never let the screen frozen for a long period. Doubt that 2 sets would have same coincidence. Now I have two newer TV's with sound and no pic. I haven't torn into that one yet. I see the various panels in back of the Regza for sale on line at decent prices. If someone could clue me in as to which one has the issue it would be great. Thanks!

    #2
    Re: Toshiba regza 52" sound no picture

    Get up close to the screen and shine a flashlight on it. It might be helpful to pull up the menu as you know where it should be on the screen.

    Do you see anything?

    Comment


      #3
      Re: Toshiba regza 52" sound no picture

      there is nothing that I can see. Just a black screen.

      Comment


        #4
        Re: Toshiba regza 52" sound no picture

        Originally posted by mmartell View Post
        Get up close to the screen and shine a flashlight on it. It might be helpful to pull up the menu as you know where it should be on the screen.

        Do you see anything?
        Do this test in a dark room....If still nothing remove the back of the TV and see if the Backlight turn ON.....you would see the white light shining through the little holes on the metal internal backing.

        Comment


          #5
          Re: Toshiba regza 52" sound no picture

          I have back off and when I turn it on one of the panels has a little green light that is lit and you can see a red light coming through a piece on another panel. not sure if that is what you are talking about but I can post a pic if you would like. Thanks for you interest
          Last edited by Dan Surra; 12-06-2016, 01:18 PM.

          Comment


            #6
            Re: Toshiba regza 52" sound no picture

            OK...so you don't have backlights...

            Comment


              #7
              Re: Toshiba regza 52" sound no picture

              Please start by doing some research on the forum on your fault and how to diagnose it.
              Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

              https://www.facebook.com/Telford-Tel...7894576335359/

              Comment


                #8
                Re: Toshiba regza 52" sound no picture

                At 2:14
                https://www.youtube.com/watch?v=xUzCLgoSPGM
                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


                  #9
                  Re: Toshiba regza 52" sound no picture

                  thank you BudM. video was very helpful for a novice. I have no back lights for sure. I am going to do flashlight menu test later today.

                  Comment


                    #10
                    Re: Toshiba regza 52" sound no picture

                    We will also need the pictures of the whole back side of the TV showing all the boards so we can see how all the boards are connected together.
                    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


                      #11
                      Re: Toshiba regza 52" sound no picture

                      ok, flash light test with room dark revealed that I can indeed see the menu. I am going to try and post pics of back of tv

                      Comment


                        #12
                        Re: Toshiba regza 52" sound no picture

                        here are pics. center section is actually two boards side by side. one is a tan/brown and other olive green.

                        Attached Files

                        Comment


                          #13
                          Re: Toshiba regza 52" sound no picture

                          I would start by checking the 24v and Blon voltages going to the inverters then checking fuses on the inverter.
                          Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                          https://www.facebook.com/Telford-Tel...7894576335359/

                          Comment


                            #14
                            Re: Toshiba regza 52" sound no picture

                            OK, it has two power supply boards: Main and Sub.
                            We need straight shot pictures of each power supply board so we can clearly the label for each pin of the connectors.
                            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


                              #15
                              Re: Toshiba regza 52" sound no picture

                              BTW, please verify the model number of the TV:
                              Toshiba 52RV520U???
                              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


                                #16
                                Re: Toshiba regza 52" sound no picture

                                ok, dumb questions. I have volt meter but which board is the inverter and what pins would they be? All the normal vacuum type glass fuses are OK but I suspect you are talking about pieces that are soldered into the circuit. I apologize for being so ignorant as to what is what in this TV. But with you guys helping, I am learning. What I would like to do is try and diagnose the problem and then change that board. They do not seem to be that pricey.

                                Comment


                                  #17
                                  Re: Toshiba regza 52" sound no picture

                                  Originally posted by budm View Post
                                  BTW, please verify the model number of the TV:
                                  Toshiba 52RV520U???
                                  Model # is 52RV530U

                                  Comment


                                    #18
                                    Re: Toshiba regza 52" sound no picture

                                    Originally posted by Dan Surra View Post
                                    Model # is 52RV530U
                                    OK, that is why I could not find the info for it.

                                    Toshiba 52RV530:
                                    http://www.shopjimmy.com/catalogsear...shiba+52RV530U

                                    Service manuals:
                                    http://elektrotanya.com/?q=showresul...oria=&kat2=all
                                    Last edited by budm; 12-07-2016, 02:55 PM.
                                    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: Toshiba regza 52" sound no picture

                                      Service manual.
                                      Check those Voltages when TV is off and when the power switch is activated.
                                      Attached Files
                                      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


                                        #20
                                        Re: Toshiba regza 52" sound no picture

                                        What does ur standby light and power light do ? Does tv make any noises like clicking relay and then u get standby light?

                                        Comment

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