Sanyo DP52449

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  • joeshannallie
    Senior Member
    • Dec 2013
    • 103
    • usa

    #1

    Sanyo DP52449

    I picked up a Sanyo DP52449 and it has a darkest blue screen not real dark but it seems maybe a little darker than normal. Also real choppy noise from the speakers. Have not done anything at all with it. Just wondering if the panel was bad would it still light up blue?
  • joeshannallie
    Senior Member
    • Dec 2013
    • 103
    • usa

    #2
    Re: Sanyo DP52449

    Well now after I really got into it, It actually looks like a a really light washed out look. The bright dots on the screen is just a reflection and nothing to do with he screen.
    Attached Files
    Last edited by joeshannallie; 12-11-2015, 05:35 PM.

    Comment

    • joeshannallie
      Senior Member
      • Dec 2013
      • 103
      • usa

      #3
      Re: Sanyo DP52449

      How do you know if the actual screen is bad and not a board?

      Comment

      • joeshannallie
        Senior Member
        • Dec 2013
        • 103
        • usa

        #4
        Re: Sanyo DP52449

        Anyone?

        Comment

        • paulstef
          Badcaps Veteran
          • Dec 2013
          • 724
          • Canada

          #5
          Re: Sanyo DP52449

          Could it be T-CON issue? Do you get voltage to the T-CON and what are the VGMA voltages on it?

          Comment

          • joeshannallie
            Senior Member
            • Dec 2013
            • 103
            • usa

            #6
            Re: Sanyo DP52449

            That is what I was leaning towards. I thank you for your reply. I have not really got into it. Would you mind telling me how to check what you said. Can I check it with a regular volt meter? Also may I ask if there is anything I can do to rule out the actual screen itself before I start throwing money into it?

            Comment

            • paulstef
              Badcaps Veteran
              • Dec 2013
              • 724
              • Canada

              #7
              Re: Sanyo DP52449

              https://www.badcaps.net/forum/attach...5&d=1398298480

              This PDF is from Tom here on Badcaps.

              Comment

              • joeshannallie
                Senior Member
                • Dec 2013
                • 103
                • usa

                #8
                Re: Sanyo DP52449

                Got around to checking this TV today and could not figure out how to test the T Conn board. The TV lights up with like a light blue screen, It has great sound. Screen never did anything different though. So it is either the T CONN board or the board that sends signal to the screen. Could it be that board even though it puts out sound? Please reply soon.

                Comment

                • jasonbay13
                  Senior Member
                  • Jul 2014
                  • 185
                  • usa

                  #9
                  Re: Sanyo DP52449

                  i have this same exact problem. backlight comes on, chopped noise sound coming from speakers (that is, until it quit now it doesnt do it anymore).
                  i have checked all correct voltages coming from power board to main board so far.
                  i have uploaded the service manual i found.
                  this looks to be a nice tv and i'd like to get it working to use. picked it up when some ppl were moving.

                  also, since the speakers were outputting chopped noise and the speakers come directly from the main board, wouldnt that indicate the problem is on the main board and not any other? number on the tuner sticker is N7KE.
                  Attached Files

                  Comment

                  • dick_barton
                    Badcaps Legend
                    • Aug 2015
                    • 6642
                    • Wales

                    #10
                    Re: Sanyo DP52449

                    Have you checked the voltages as given on page 5 of the manual?
                    Willing to help but I'm no expert.

                    Comment

                    • jasonbay13
                      Senior Member
                      • Jul 2014
                      • 185
                      • usa

                      #11
                      Re: Sanyo DP52449

                      i checked the voltages as shown and they are correct with the tv on. except that i couldnt find ic1680 or ic1670 (it has a * on schematic and is not populated on board) and ic6750 is on the 120hz board and is under a heatsink.

                      Comment

                      • joeshannallie
                        Senior Member
                        • Dec 2013
                        • 103
                        • usa

                        #12
                        Re: Sanyo DP52449

                        A new T conn board did not fix mine. So it is sitting in the garage for now.

                        Comment

                        • joeshannallie
                          Senior Member
                          • Dec 2013
                          • 103
                          • usa

                          #13
                          Re: Sanyo DP52449

                          Here is a pic of the board. How can I test the board. If anyone has one of these that is guaranteed to be good and the price is right I will be interested. Please reply.
                          Attached Files

                          Comment

                          • dick_barton
                            Badcaps Legend
                            • Aug 2015
                            • 6642
                            • Wales

                            #14
                            Re: Sanyo DP52449

                            Have you checked the fuse on the Tcon board to see if it has a dc voltage on both sides?

                            Edit
                            I see that you have replaced the Tcon but it would be worth checking the voltage to it.
                            Last edited by dick_barton; 06-01-2016, 01:25 PM.
                            Willing to help but I'm no expert.

                            Comment

                            • joeshannallie
                              Senior Member
                              • Dec 2013
                              • 103
                              • usa

                              #15
                              Re: Sanyo DP52449

                              Can you please tell me how to check that fuse. Can you check it with a regular voltmeter? How could I check to see if the panel was bad? You can get audio.

                              Comment

                              • dick_barton
                                Badcaps Legend
                                • Aug 2015
                                • 6642
                                • Wales

                                #16
                                Re: Sanyo DP52449

                                With the set on and out of standby you can check it by testing the voltage at both sides of the fuse with your voltmeter set to DC. Black meter lead on the chassis and red meter lead to each side of the fuse in turn. The fuse should be marked something like "F1"
                                Willing to help but I'm no expert.

                                Comment

                                • dick_barton
                                  Badcaps Legend
                                  • Aug 2015
                                  • 6642
                                  • Wales

                                  #17
                                  Re: Sanyo DP52449

                                  Have a read through this thread. It may help you.
                                  https://www.badcaps.net/forum/showth...hlight=DP52449
                                  Willing to help but I'm no expert.

                                  Comment

                                  • jasonbay13
                                    Senior Member
                                    • Jul 2014
                                    • 185
                                    • usa

                                    #18
                                    Re: Sanyo DP52449

                                    so i replaced the main board and 120hz board, no change. t-con board (checked f1 resistance .04ohm) or a bad cable?

                                    Comment

                                    • jasonbay13
                                      Senior Member
                                      • Jul 2014
                                      • 185
                                      • usa

                                      #19
                                      Re: Sanyo DP52449

                                      Tv now works with t-con board replaced. - in case anyone cares to know.

                                      Comment

                                      • joeshannallie
                                        Senior Member
                                        • Dec 2013
                                        • 103
                                        • usa

                                        #20
                                        Re: Sanyo DP52449

                                        Good for you! I ordered another Tconn board from Ebay and installed it and no luck. Maybe I got a bad board, Who knows! Can someone look at my board and tell me where to check it? I dont see a fuse on it anywhere.
                                        Attached Files

                                        Comment

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