RCA 47LA55RS Lcd tv

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  • Roadhouse
    New Member
    • Feb 2014
    • 9
    • USA
    #1

    RCA 47LA55RS Lcd tv

    Feb. 2010 RCA 47LA55RS Lcd tv. Last year one thin horizontal black line appeared near top right corner of screen and went 3/4's the way across screen, simply was just there while tv operated otherwise normally. During this time a "pop" sound would occasionally take place and the tv would turn off. I'd simply pull the plug and wait a few minutes, plug tv back in and I'd have picture and sound again, black line still there.

    A few days ago the picture went out completely but still had great sound. I researched youtube, google and this site and found the most reasonable assessment to be a master and/or slave inverter (which I've found both at the same price of $51.69 at shopjimmy's.com for my tv) but my two questions are which is the master and which is the slave inverter and can the tv show lines, now both vertical and horizontal once plugged back in and turned on, and it be the inverter(s) or would a or the bad inverter(s) show no image, not even just lines?

    Thanks to all whom may assist me with this in advance.

    from back with panel off: inverter on left 6632L-0581A
    inverter on right 6632L-0582A
    which is which of those? Thanks.
    Tags: None
    • selldoor
      Slow Learner
      • Dec 2010
      • 7870
      #2
      Re: RCA 47LA55RS Lcd tv

      Not sure what your question is or why
      |Just google each number 6632L-0581A 6632L-0582A in turn and top item is shop jimmy - just read what it says ?
      Please upload pictures using attachment function when ask for help on the repair
      http://www.badcaps.net/forum/showthread.php?t=39740

        Comment

        • Roadhouse
          New Member
          • Feb 2014
          • 9
          • USA
          #3
          Re: RCA 47LA55RS Lcd tv

          Can a symptom of a bad inverter or bad inverters be that there is no picture other than both horizontal and vertical lines on screen?

          Last night I unplugged one inverter at a time, leaving one inverter of the two fully plugged in, and then the tcon and with any of the three unplugged at one time there was a blank screen. With all three plugged in as normal there are both horizontal and vertical lines with a purple background displaying on the screen. Tv does produce sound.

          I'm just trying to figure out what is wrong. I got a screaming deal on this tv new a few years back, would be a shame to throw it out if it can be relatively inexpensively repaired.

          Thank you.

            Comment

            • Dang
              Badcaps Veteran
              • Aug 2013
              • 440
              • UK
              #4
              Re: RCA 47LA55RS Lcd tv

              The inverter is purely for the back light, bad inverter, no back light. As to your lines, that's likely to be a bad screen, notably bad tab bonds.

                Comment

                • Roadhouse
                  New Member
                  • Feb 2014
                  • 9
                  • USA
                  #5
                  Re: RCA 47LA55RS Lcd tv

                  Originally posted by Dang
                  The inverter is purely for the back light, bad inverter, no back light. As to your lines, that's likely to be a bad screen, notably bad tab bonds.
                  Screen does light up. I'll take some pics and post them if I can here in a bit so you all can see what I see.

                  Would that be a costly repair compared to an inverter, the tab bonds? Thanks.

                    Comment

                    • Roadhouse
                      New Member
                      • Feb 2014
                      • 9
                      • USA
                      #6
                      Re: RCA 47LA55RS Lcd tv

                      I have the back of tv off, electronics exposed. When I touch and move either of the two inverters the lines on the screen change, goes blank and comes back on with lines.

                      ??

                        Comment

                        • Roadhouse
                          New Member
                          • Feb 2014
                          • 9
                          • USA
                          #7
                          Re: RCA 47LA55RS Lcd tv

                          [/URL][/IMG]

                            Comment

                            • Roadhouse
                              New Member
                              • Feb 2014
                              • 9
                              • USA
                              #8
                              Re: RCA 47LA55RS Lcd tv

                              [/URL][/IMG]

                                Comment

                                • tom66
                                  EVs Rule
                                  • Apr 2011
                                  • 32560
                                  • UK
                                  #9
                                  Re: RCA 47LA55RS Lcd tv

                                  A tab bonding fault is not always fixable. It's related to the connections on the edge of the glass becoming separated over time due to heat or mechanical flex. Your fault does look like tab bonds to me, or a bad LCD panel. May or may not be fixable.
                                  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

                                    • Roadhouse
                                      New Member
                                      • Feb 2014
                                      • 9
                                      • USA
                                      #10
                                      Re: RCA 47LA55RS Lcd tv

                                      Just got off the phone with shopjimmy's technical support. Tech said it is either the tcon (under $25) or the screen itself. If the screen, not worth it.

                                      A bit of new info in the event it helps someone else, tech had me push the menu and input buttons to see if anything showed up. Nothing did, but screen flashed every time I touched a button, then screen went white with lines on it.

                                      Diagnosis over the phone: bad tcon or screen.

                                      Thanks for the help.

                                        Comment

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