Samsung le46b530p7w

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • diif
    Badcaps Legend
    • Feb 2014
    • 6978
    • England

    #141
    Re: Samsung le46b530p7w

    Thanks for that, very helpful. I'll check the resistance first to rule out the transformers then try that test.

    Comment

    • diif
      Badcaps Legend
      • Feb 2014
      • 6978
      • England

      #142
      Re: Samsung le46b530p7w

      I'm not sure there's any power getting to the balancer. I've tried the test on the video and I get 0v.
      Ive measured the voltages on the connector to the mainboard.
      5V_DET 2.8v
      E-PWM 1.7v
      INV-ON 5.1v
      13v 12.78v
      5.1v 5.2v

      I'll try it with the jumper wire soldered back on.

      Comment

      • budm
        Badcaps Legend
        • Feb 2010
        • 40746
        • USA

        #143
        Re: Samsung le46b530p7w

        Is your power supply/inverter combo board Samsung BN44-00265a/b>?
        CNI803 (12V/FB/GND/LD) on the power supply/inverter board has 12V output to run the error detection circuits on the balancer board.
        Last edited by budm; 08-04-2017, 04:36 PM.
        Never stop learning
        Basic LCD TV and Monitor troubleshooting guides.
        http://www.badcaps.net/forum/showthr...956#post305956

        Voltage Regulator (LDO) testing:
        http://www.badcaps.net/forum/showthr...999#post300999

        Inverter testing using old CFL:
        http://www.badcaps.net/forum/showthr...er+testing+cfl

        Tear down pictures : Hit the ">" Show Albums and stories" on the left side
        http://s807.photobucket.com/user/budm/library/

        TV Factory reset codes listing:
        http://www.badcaps.net/forum/showthread.php?t=24809

        Comment

        • diif
          Badcaps Legend
          • Feb 2014
          • 6978
          • England

          #144
          Re: Samsung le46b530p7w

          Originally posted by budm
          Is your power supply/inverter combo board Samsung BN44-00265a/b>?
          CNI803 (12V/FB/GND/LD) on the power supply/inverter board has 12V output to run the error detection circuits on the balancer board.
          Yes, it's a BN44-00265B

          0v on the 12v pin of CNI803

          Comment

          • budm
            Badcaps Legend
            • Feb 2010
            • 40746
            • USA

            #145
            Re: Samsung le46b530p7w

            OK, we need to get that 12V feeding the Balancer board. That 12V is tested with the TV turned on , right?
            Also the Voltages at the connector that goes to the main board are present, right?
            Attached Files
            Last edited by budm; 08-04-2017, 07:25 PM.
            Never stop learning
            Basic LCD TV and Monitor troubleshooting guides.
            http://www.badcaps.net/forum/showthr...956#post305956

            Voltage Regulator (LDO) testing:
            http://www.badcaps.net/forum/showthr...999#post300999

            Inverter testing using old CFL:
            http://www.badcaps.net/forum/showthr...er+testing+cfl

            Tear down pictures : Hit the ">" Show Albums and stories" on the left side
            http://s807.photobucket.com/user/budm/library/

            TV Factory reset codes listing:
            http://www.badcaps.net/forum/showthread.php?t=24809

            Comment

            • diif
              Badcaps Legend
              • Feb 2014
              • 6978
              • England

              #146
              Re: Samsung le46b530p7w

              Yes, measured with the TV on it's measuring 0.1v not the 0v i previously though.
              All voltages present on the connector to the mainboard post#142.

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA

                #147
                Re: Samsung le46b530p7w

                Originally posted by diif
                Yes, measured with the TV on it's measuring 0.1v not the 0v i previously though.
                All voltages present on the connector to the mainboard post#142.
                Since you do have 13VDC but no 12VDC to feed the Balancer detection circuit, I suspect that you may have bad 12VLDO regulator ICI808 (I think it is '8' not '3') which fed by 13V and the output is 12VDC, see schematic page one regulator block, so find out if you have 13V at input or not, and verify that the resistance between Gnd and the OUTPUT PIN does not have low resistance of <100 Ohms.
                Last edited by budm; 08-05-2017, 02:22 PM.
                Never stop learning
                Basic LCD TV and Monitor troubleshooting guides.
                http://www.badcaps.net/forum/showthr...956#post305956

                Voltage Regulator (LDO) testing:
                http://www.badcaps.net/forum/showthr...999#post300999

                Inverter testing using old CFL:
                http://www.badcaps.net/forum/showthr...er+testing+cfl

                Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                http://s807.photobucket.com/user/budm/library/

                TV Factory reset codes listing:
                http://www.badcaps.net/forum/showthread.php?t=24809

                Comment

                • diif
                  Badcaps Legend
                  • Feb 2014
                  • 6978
                  • England

                  #148
                  Re: Samsung le46b530p7w

                  Originally posted by budm
                  Since you do have 13VDC but no 12VDC to feed the Balancer detection circuit, I suspect that you may have bad 12VLDO regulator ICI808 (I think it is '8' not '3') which fed by 13V and the output is 12VDC, see schematic page one regulator block, so find out if you have 13V at input or not, and verify that the resistance between Gnd and the OUTPUT PIN does not have low resistance of <100 Ohms.
                  Thank you, I was thinking the same. I've just got to find it now !

                  Comment

                  • diif
                    Badcaps Legend
                    • Feb 2014
                    • 6978
                    • England

                    #149
                    Re: Samsung le46b530p7w

                    IC 1803 isn't fitted and it doesn't look as if it ever has been. Looking under the microscope I see that R1829 and R1830 are burnt up. I've only got 10ohm in 3216, ok to try you think ?

                    Comment

                    • diif
                      Badcaps Legend
                      • Feb 2014
                      • 6978
                      • England

                      #150
                      Re: Samsung le46b530p7w

                      Yes, the TV is on
                      Thank you for your help as always budm.

                      Comment

                      • diif
                        Badcaps Legend
                        • Feb 2014
                        • 6978
                        • England

                        #151
                        Re: Samsung le46b530p7w

                        Photos of the missing regulator and burnt resistors the other side.
                        Attached Files

                        Comment

                        Related Topics

                        Collapse

                        • Chrissygizmo
                          Samsung UE55JU6800K half screen dark
                          by Chrissygizmo
                          Hello everyone, I’ve just been given a Samsung UE55JU6800K smart tv as it had white spots on the screen due to the led lenses falling off. After refitting them & putting the tv back together I thought it was a nice easy fix for a free bedroom tv , then I tried it before screwing the back into place. I realised that the right side of the screen was darker than the other side, I removed the screen again as I thought the backlights had failed but they are fine.
                          I put the screen back in place & turned it back on . The screen seemed to be ok again but different screens on the same...
                          02-10-2025, 12:33 AM
                        • Chrissygizmo
                          samsung galaxy ao2s very temperamental after screen replaced
                          by Chrissygizmo
                          Hi , I've recently replaced the screen in my Samsung galaxy ao2s, at first it wouldn't even turn on, it had the charging symbol on the screen when plugged in but the green circle wasn't going around to show it charging....
                          Ive eventually managed to get it on and working but it's very temperamental...

                          The battery icon always reads as 50% , when the phone goes into lock screen mode i sometimes can't get the screen back on unless I plug the charger in to get it to light up, also it keeps putting the camera app on.. u think it could be something to do with the side buttons. ...
                          05-26-2024, 12:05 AM
                        • Kiberge
                          Samsung LH82QENELGC/EN Help needed - Static line on screen
                          by Kiberge
                          HI guys!

                          I've got a Samsung LH82QENELGC/EN with a problem and need some advice and I hope this is the forum to use?
                          I'm from Norway so I'd like to apology in advance if my description of the fault is kind of simple or the names on the components are way off. 😊

                          the TV is powering up, working as normally and picture is all good, except a 1.5-inch-wide vertical line of snow/static across the screen.


                          This TV is a Signage Display/Public Display version and it's been used at my work for 4-5 years showing commercials 24/7. The fault occurred when...
                          04-22-2024, 11:28 AM
                        • Ryan.man
                          Macbook 2017 with touchbar (A1706) won't turn on after removing the screen
                          by Ryan.man
                          Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!

                          My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.

                          This time the original cable broke too close to the screen, it can't be fixed without tearing the screen...
                          02-04-2025, 12:23 PM
                        • arbitarytwist
                          Samsung UN50NU7400 - No Picture (but boot screen and screensaver)
                          by arbitarytwist
                          Have a Samsung UN50NU7400 which shows a boot screen and a screen saver if left on long enough but no picture ?

                          Would a moving screen saver confirm that the panel is ok or it could still be a panel issue ?
                          03-01-2025, 01:16 PM
                        • Loading...
                        • No more items.
                        Working...