Sony KDL-46Z5100 No Video No Sound

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  • a55bruce
    Member
    • Aug 2010
    • 26
    #1

    Sony KDL-46Z5100 No Video No Sound

    Here's what I know so far...
    On power up I get the green light, relay click, and the SONY Logo on the frame lights up. No sound or video. Back-light is working. I can get the LCD panel to do a few seconds of full screen single color. If the TCON connector is unplugged while the back-light is on, it appears that the TCON does a "Test" of the panel by rotating thru some single color test patterns. After about 10 seconds the set detects the TCON fault (cable unplugged) and shuts down w/ the red light blinking.
    Does this show that the TCON is OK?
    I've checked the fuses on the main board w/ continuity and by checking for voltage on both sides of the fuses.
    Any ideas what to check next?
    I've not had any luck in finding the service manual or schematic for this model.
    Attached Files
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    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12206
      • U.S.
      #2
      Re: Sony KDL-46Z5100 No Video No Sound

      http://elektrotanya.com/?q=showresul...oria=&kat2=all
      Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.

        Comment

        • nomoresonys
          Badcaps Legend
          • Jan 2013
          • 12206
          • U.S.
          #3
          Re: Sony KDL-46Z5100 No Video No Sound

          I'd start with making sure all the voltages at the plugs are correct on the power supply board, careful HIGH VOLTAGE on ac side, could be a tcon, voltage at tcon can be checked.
          Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.

            Comment

            • a55bruce
              Member
              • Aug 2010
              • 26
              #4
              Re: Sony KDL-46Z5100 No Video No Sound

              Originally posted by nomoresonys
              http://elektrotanya.com/?q=showresul...oria=&kat2=all
              This link lists models 46S4100. Is this comparable with the Z 5100 model I have?
              I seem to be having a senior moment, I can not see a link for downloading the PDF's.
              I've tried 3 different browsers. What am I missing?

                Comment

                • nomoresonys
                  Badcaps Legend
                  • Jan 2013
                  • 12206
                  • U.S.
                  #5
                  Re: Sony KDL-46Z5100 No Video No Sound

                  lol, my bad, I must have it on the last one I searched for, try putting your model in the search.
                  Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.

                    Comment

                    • nomoresonys
                      Badcaps Legend
                      • Jan 2013
                      • 12206
                      • U.S.
                      #6
                      Re: Sony KDL-46Z5100 No Video No Sound

                      Originally posted by a55bruce
                      Here's what I know so far...
                      On power up I get the green light, relay click, and the SONY Logo on the frame lights up. No sound or video. Back-light is working. I can get the LCD panel to do a few seconds of full screen single color. If the TCON connector is unplugged while the back-light is on, it appears that the TCON does a "Test" of the panel by rotating thru some single color test patterns. After about 10 seconds the set detects the TCON fault (cable unplugged) and shuts down w/ the red light blinking.
                      Does this show that the TCON is OK?
                      I've checked the fuses on the main board w/ continuity and by checking for voltage on both sides of the fuses.
                      Any ideas what to check next?
                      I've not had any luck in finding the service manual or schematic for this model.
                      I'm thinking there must be some kind of common problem that has a lot of these kdl models displaying the same test screens as you describe, I have same issue read about a lot more.
                      Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.

                        Comment

                        • a55bruce
                          Member
                          • Aug 2010
                          • 26
                          #7
                          Re: Sony KDL-46Z5100 No Video No Sound

                          OK, I've checked the voltages at the connectors, all appear to be correct. The fuses on the TCON are good. The manuals for this model are not available at elektrotanya. Any other sites I can check?

                            Comment

                            • Pragmatiko
                              Badcaps Veteran
                              • Jul 2013
                              • 468
                              • IT
                              #8
                              Re: Sony KDL-46Z5100 No Video No Sound

                              Try here http://www.free-service-manual-downl...6-20021-0.html

                                Comment

                                • a55bruce
                                  Member
                                  • Aug 2010
                                  • 26
                                  #9
                                  Re: Sony KDL-46Z5100 No Video No Sound

                                  Just a quick follow-up for others that have this model. The problem was the main board (BU), found one on ebay that fixed the TV. The test pattern described earlier does appear to indicate a functioning TCON board. Finding the manuals was the hardest chore. I spent way too much time downloading files from the slowest site I've ever encountered (free-service-manual-download.com). And none of the ones I downloaded would open!!!
                                  Here are the files I used:

                                    Comment

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