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TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

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    #41
    Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

    Originally posted by nomoresonys View Post
    Check the sticker numbers on the panel/back chassis see if they match.
    The person from whom I want to buy the tv is too weak to bring the tv down from its wall mount. So she cant read off the stickers from the back of the tv. Is there another way to do that?

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      #42
      Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

      Someone wants to buy this tv from me for $90. Do you guys think its worth that I should sell it or try to fix it?
      Last edited by koolx; 07-07-2020, 03:07 PM.

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        #43
        Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

        Probably a pretty good tv you have there, probably just a matter of what's wrong with it, which may be found with proper testing but it's work and not always easy if inexperienced with electronics.

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          #44
          Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

          Originally posted by nomoresonys View Post
          Probably a pretty good tv you have there, probably just a matter of what's wrong with it, which may be found with proper testing but it's work and not always easy if inexperienced with electronics.
          Hi nomoresonys. I hear ya. I'm experienced with replacing parts on laptops and I built my own custom PC if that qualifies me for a "techie." Not completely inexperienced by those standards. It does seem like an easy fix just a matter of dialing in on what part should be replaced.

          The tv itself is enticing me to keep it to fix it. The only drivers keeping me from embracing it fully are the viewing angle which gets cloudy and the low brightness level. I want a bright tv not one where I have to struggle to make out images. But if you think these factors are mitigating let me know.

          Looks like budman is busy working today. Hope he reads this today and get his input.

          .

          .

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            #45
            Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

            If you got a meter working properly, try the tests in post #20, they're pretty simple, the test is on the cold side of powerboard, the HOT/PRIMARY side is the side with the DEADLY VOLTAGES and you MUST be very careful when working in that area, number 2 below shows a video tutorial.

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              #46
              Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

              I'm waiting for your test result in my post #20.
              Did you read it and understand it?
              Did you verify that the meter is good for sure at this point?
              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


                #47
                Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

                Hi budman. I will get those readings out to you. I ran into an unexpected snag today. All I ask is just a little bit more patience. Thank you budman.

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                  #48
                  Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

                  Well I was referring to the panel sticker info, which is on the back metal chassis of tv on a sticker, you need to take the back cover off to access it, guess you could see if there is a service code number on the back cover, might start with srv code or sum such.

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                    #49
                    Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

                    Originally posted by nomoresonys View Post
                    Well I was referring to the panel sticker info, which is on the back metal chassis of tv on a sticker, you need to take the back cover off to access it, guess you could see if there is a service code number on the back cover, might start with srv code or sum such.
                    Thats too much work for the person who owns that tv.

                    Comment


                      #50
                      Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

                      Figured it would be because you said they were old, there are 2 suggestions there, the other is just look at the back cover without removing and see if there is a service code number, other than that, I don't know.
                      Last edited by nomoresonys; 07-08-2020, 09:38 AM.

                      Comment


                        #51
                        Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

                        Originally posted by nomoresonys View Post
                        Figured it would be because you said they were old, there are 2 suggestions there, the other is just look at the back cover without removing and see if there is a service code number, other than that, I don't know.
                        Hi nomoresonys.. when you say to "look at the back cover without removing" do you mean the stickers on the back of the tv that contain info like serial number?

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                          #52
                          Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

                          Yes indeed.

                          Comment


                            #53
                            Re: TCL Model 55S405 - No Pic, No Backlight, No Sound - HELP!!!

                            So where is the follow-up?
                            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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