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RCA LED46C45RQ,Sound but no Back lights

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    #41
    Re: RCA LED46C45RQ,Sound but no Back lights

    With tester all lights lite at same brightness . when hooked up to power board lights don't come on
    voltage drops at connector

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      #42
      Re: RCA LED46C45RQ,Sound but no Back lights

      If you have voltage at the connector you should have at least a flash of the led's

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        #43
        Re: RCA LED46C45RQ,Sound but no Back lights

        Yes 1 flash then nothing

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          #44
          Re: RCA LED46C45RQ,Sound but no Back lights

          did you check the leds individually? might give a clue.

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            #45
            Re: RCA LED46C45RQ,Sound but no Back lights

            no

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              #46
              Re: RCA LED46C45RQ,Sound but no Back lights

              Already put it back together

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                #47
                Re: RCA LED46C45RQ,Sound but no Back lights

                thinking most of the time, that one flash means bad backlight led/s or poor backlight connection.

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                  #48
                  Re: RCA LED46C45RQ,Sound but no Back lights

                  Don't know how to put more power to them other the tester that will tell

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                    #49
                    Re: RCA LED46C45RQ,Sound but no Back lights

                    when testing with backlight tester, did you test thru the backlight cable going to the backlights or right on the strips, meaning did you verify continuity of the cable?

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                      #50
                      Re: RCA LED46C45RQ,Sound but no Back lights

                      connector

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                        #51
                        Re: RCA LED46C45RQ,Sound but no Back lights

                        Originally posted by tennno` View Post
                        Don't see any I got a different board today its doing the same thing joints on this board looks good
                        You had 0v at led connector with old board and now you have voltage at led connector with new board. Correct? And now you get a flash of backlights?
                        I assume no responsibility for any stupid suggestions I might post.

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                          #52
                          Re: RCA LED46C45RQ,Sound but no Back lights

                          Yes but voltage drops off

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                            #53
                            Re: RCA LED46C45RQ,Sound but no Back lights

                            Ok then you need to do what was suggested in post 40.
                            I assume no responsibility for any stupid suggestions I might post.

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                              #54
                              Re: RCA LED46C45RQ,Sound but no Back lights

                              Reopened it and tested each led found 1 bad (dead)trying to locate a new strip
                              IC-A-KJAB46D444 (8 leds on strip)

                              flashes to fast to tell if brightness is different
                              Last edited by tennno`; 04-12-2022, 12:13 PM.

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                                #55
                                Re: RCA LED46C45RQ,Sound but no Back lights

                                https://www.youtube.com/watch?v=Y2Tv...ck%27sTVRepair
                                I assume no responsibility for any stupid suggestions I might post.

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                                  #56
                                  Re: RCA LED46C45RQ,Sound but no Back lights

                                  Thanks All you guys for your help .I'll get back after I get different back lights and let you know.

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