LG 50PG20-UA HD Plasma issue...

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  • pansatdishman
    Senior Member
    • Jun 2013
    • 110
    • Canada
    #1

    LG 50PG20-UA HD Plasma issue...

    Hello, I have a 50" Lg Plasma HD model 50PG20 the picure works fine but about the 3rd of the way down it has about a 1 inch horizontal line across the screen, I have not done anything to this tv yet what would you suggest and what is the issue?
    thanks
    Picture of the tv screen



    Bad upper y buffer board?

    Thanks
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: LG 50PG20-UA HD Plasma issue...

      Upper Y buffer would be my guess.
      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

        • pansatdishman
          Senior Member
          • Jun 2013
          • 110
          • Canada
          #3
          Re: LG 50PG20-UA HD Plasma issue...

          is there a way to fix the buffer board, i'm use to fixing power supply's but i know these circuit board are way smaller. is there a way to check to see if its the board or the pannel?
          thanks tom66

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: LG 50PG20-UA HD Plasma issue...

              There is no way the panel could cause this in my opinion. Repairing buffer boards is possible, but may not be worth it depending on the price and your ability. The buffer chips require good soldering skills to replace. If you're up to replacing a 128 pin chip with 0.5mm between pins, you may be able to do it. Otherwise, swap the board.
              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

                • pansatdishman
                  Senior Member
                  • Jun 2013
                  • 110
                  • Canada
                  #5
                  Re: LG 50PG20-UA HD Plasma issue...

                  Alright thanks, I'm not that good at soldering lol I would cause more damage to it then I would fix it lol
                  that board says,
                  EBR50039007
                  YDRVTP
                  HS500891031
                  are there any other boards with different numbers that are compatible?
                  thanks for your help

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK
                      #6
                      Re: LG 50PG20-UA HD Plasma issue...

                      Looks to be around $63, new:
                      http://www.partstore.com/Model/LG+El...R50039007.aspx

                      Not bad really, used prices are around $50~60 but all seem out of stock.
                      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

                        • pansatdishman
                          Senior Member
                          • Jun 2013
                          • 110
                          • Canada
                          #7
                          Re: LG 50PG20-UA HD Plasma issue...

                          Thanks for the reply unfortunately i'm in canada so i'm going to hve to search a little harder, thanks for your help though its greatly appreciated

                            Comment

                            • pansatdishman
                              Senior Member
                              • Jun 2013
                              • 110
                              • Canada
                              #8
                              Re: LG 50PG20-UA HD Plasma issue...

                              are EBR50039005 and EBR50039007 the same and interchangeable?
                              thanks

                                Comment

                                • tom66
                                  EVs Rule
                                  • Apr 2011
                                  • 32560
                                  • UK
                                  #9
                                  Re: LG 50PG20-UA HD Plasma issue...

                                  They may be. To be sure, you will need to see if all dimensions and connectors are the same, and that it is used in the same plasma panel (not TV model, the plasma glass itself, which has a sticker on the metal plate e.g. LG Electronics PDP50G8#####)
                                  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

                                    • pansatdishman
                                      Senior Member
                                      • Jun 2013
                                      • 110
                                      • Canada
                                      #10
                                      Re: LG 50PG20-UA HD Plasma issue...

                                      Originally posted by tom66
                                      Looks to be around $63, new:
                                      http://www.partstore.com/Model/LG+El...R50039007.aspx

                                      Not bad really, used prices are around $50~60 but all seem out of stock.
                                      I was just curious as that site says EBR500039005
                                      Here's my panel details:
                                      It's a Mexico model,
                                      the sticker says:
                                      Model: PDP50G10343
                                      Mexico 2008.09
                                      Thanks for your help

                                        Comment

                                        • tom66
                                          EVs Rule
                                          • Apr 2011
                                          • 32560
                                          • UK
                                          #11
                                          Re: LG 50PG20-UA HD Plasma issue...

                                          You need to check if those boards came from a PDP50G1 panel but they'll probably work.
                                          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

                                            • pansatdishman
                                              Senior Member
                                              • Jun 2013
                                              • 110
                                              • Canada
                                              #12
                                              Re: LG 50PG20-UA HD Plasma issue...

                                              Thanks, sorry for all the questions i'm new to this so does this mean an 05 and a 07 board are interchangeable
                                              http://www.shopjimmy.com/catalogsear...?q=EAX50051102
                                              thanks

                                                Comment

                                                • johnboy1313
                                                  Badcaps Legend
                                                  • Nov 2012
                                                  • 1959
                                                  • USA
                                                  #13
                                                  Re: LG 50PG20-UA HD Plasma issue...

                                                  Looks like it. They both show EBR55323602 as a substitute.

                                                    Comment

                                                    • pansatdishman
                                                      Senior Member
                                                      • Jun 2013
                                                      • 110
                                                      • Canada
                                                      #14
                                                      Re: LG 50PG20-UA HD Plasma issue...

                                                      Thanks for the help, I just tried turning my tv on today, the back has been off it for months, now i get sound but no picture (i haven't changed the y buffer board yet) i noticed the back of it is fairly dusty and the power supply makes a hum when on. i think i have a bigger issue? i should also add i removed the heatsinks from the top y buffer board and the glue around the chips on the top y buffer board
                                                      thanks
                                                      Last edited by pansatdishman; 07-16-2013, 11:35 AM.

                                                        Comment

                                                        • tom66
                                                          EVs Rule
                                                          • Apr 2011
                                                          • 32560
                                                          • UK
                                                          #15
                                                          Re: LG 50PG20-UA HD Plasma issue...

                                                          Yeah, the glue around the buffer chips is vital (high voltage insulation), the buffer is probably fried now... hope the Y-sus is still OK.
                                                          Try with top buffer unplugged.
                                                          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

                                                            • pansatdishman
                                                              Senior Member
                                                              • Jun 2013
                                                              • 110
                                                              • Canada
                                                              #16
                                                              Re: LG 50PG20-UA HD Plasma issue...

                                                              with the top buffer removed i get picture on the bottom half only its distortedi'm assuming thats because to work properly it needs both buffers?
                                                              thanks for helping me with my stupidity
                                                              Attached Files
                                                              Last edited by pansatdishman; 07-16-2013, 03:10 PM.

                                                                Comment

                                                                • tom66
                                                                  EVs Rule
                                                                  • Apr 2011
                                                                  • 32560
                                                                  • UK
                                                                  #17
                                                                  Re: LG 50PG20-UA HD Plasma issue...

                                                                  Yes that indicates your Y-sus is OK and your bottom buffer is most likely OK. Both buffers are required for a good image.
                                                                  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

                                                                    • pansatdishman
                                                                      Senior Member
                                                                      • Jun 2013
                                                                      • 110
                                                                      • Canada
                                                                      #18
                                                                      Re: LG 50PG20-UA HD Plasma issue...

                                                                      thanks i was worried for a second i ruined it , now it looks like i need a top buffer board for sure

                                                                        Comment

                                                                        • rccrasher65
                                                                          Badcaps Veteran
                                                                          • Mar 2014
                                                                          • 592
                                                                          • United States
                                                                          #19
                                                                          Re: LG 50PG20-UA HD Plasma issue...

                                                                          I have the same LG 50PG20 -ua, I'm having power issues. I have standby(red), when I try to power set on, It goes from red to 2flashes blue, then steady blue. I have no pic or sound, but I have not tried an external source for sound, didn't think it would work if tv doesn't power up, anybody have any suggestions. checked all the voltages, all seem good. Any help would be appreciated, thanks George

                                                                            Comment

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