Samsung UN60EH6000 Tries to come on, but stops

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • karthur
    Senior Member
    • Nov 2015
    • 150
    • United States

    #1

    Samsung UN60EH6000 Tries to come on, but stops

    Symptoms:
    When I turn the set on, it makes the welcome sound and the screen is dimly lit.
    The power button flashes 6 times.
    The screen stays dimly lit, but that is all it will do.

    I have checked:
    A. Visual inspection of P/S board (BN44-00500A), the Main board (BN94-05549E) and T-Con board (BN97-0655TC). Nothing looks burned or out of order.

    B.On P/S board I checked the voltage going out of it. There are pins 1-9 (See attached image of connector).
    Pin 1 to 4 (D1+ to D1-) =150Vdc
    Pin 1 to 3 (D1+ to D1-) =150Vdc
    Pin 6 to 9 (D2+ to D2-) =117Vdc
    Pin 6 to 9 (D2+ to D2-) =117Vdc

    C. On the 14 pin connector (see attached Image), I checked these between the pin and the chassis.
    1 :12.83
    3 :12.83
    5 :12.83
    7 :12.83
    9 :0
    11 :5.43
    13 :5.43

    D. In order to check pins 2 thru 14, I had to uplug the connector. Not sure if that was the correct thing to do or not, but I could not access the pins with it connected. Here are the readings I got.
    2: 3.07
    4 :12.83
    6 :3.02
    8 :0
    10 :0
    12 :5.45
    14 :3.23

    E: Checked fuse incoming fuse on T-con. It is ok.

    What do I need to check on the P/S board to determine what the trouble is?

    Thanks,
    Kirk





    Last edited by karthur; 12-09-2017, 10:45 AM.
  • zomi
    Badcaps Veteran
    • Nov 2011
    • 505

    #2
    Re: Samsung UN60EH6000 Tries to come on, but stops

    Dissconnect the ribbons going to the lcd
    1 at a time and see what happens,

    Comment

    • Davi.p
      Badcaps Legend
      • Sep 2009
      • 4266
      • Italy - Milan

      #3
      Re: Samsung UN60EH6000 Tries to come on, but stops

      It's not clear, do you have an image?? The backlight is evidently OK don't test it..

      Comment

      • CapLeaker
        Leaking Member
        • Dec 2014
        • 7982
        • Canada

        #4
        Re: Samsung UN60EH6000 Tries to come on, but stops

        Looks to me under B that you have a bad LED string D2.

        Comment

        • karthur
          Senior Member
          • Nov 2015
          • 150
          • United States

          #5
          Re: Samsung UN60EH6000 Tries to come on, but stops

          " do I have an image"....

          No image. When set comes on, the backlights are just dimly backlit. No video.

          Comment

          • CapLeaker
            Leaking Member
            • Dec 2014
            • 7982
            • Canada

            #6
            Re: Samsung UN60EH6000 Tries to come on, but stops

            Unplug the main board from the PSU and plug the TV in. See if the backlights come on full tilt.

            Comment

            • karthur
              Senior Member
              • Nov 2015
              • 150
              • United States

              #7
              Re: Samsung UN60EH6000 Tries to come on, but stops

              Originally posted by zomi
              Dissconnect the ribbons going to the lcd
              1 at a time and see what happens,
              I just tried that. No noticable difference with either ribbon unplugged.

              Originally posted by CapLeaker
              Unplug the main board from the PSU and plug the TV in. See if the backlights come on full tilt.
              Yes, the backlights are much brighter with that unplugged. When I plug it back in, they go off.

              Comment

              • karthur
                Senior Member
                • Nov 2015
                • 150
                • United States

                #8
                Re: Samsung UN60EH6000 Tries to come on, but stops

                I just watched this YT video of a guy troubleshooting a Samsung T-Con board. He has the same symptoms as mine. Not the same board as mine (his is a BN95-00628 vs my BN97-0655) but mine has the same components that he is checking.

                On coil L701 and L702, I have 0 and 0.7 volts. These should be 1 and 3.3 Volts. My L302 is 1.0, which is correct. Also on caps L7114 and 7122, I have .01... they should be 35V.

                He says the problem is the "Switch Mode Power controller" chip on this board (ISL9860). He replaced the chip and it fixed his issue.

                This sound right to you guys?
                Last edited by karthur; 12-09-2017, 07:12 PM.

                Comment

                • CapLeaker
                  Leaking Member
                  • Dec 2014
                  • 7982
                  • Canada

                  #9
                  Re: Samsung UN60EH6000 Tries to come on, but stops

                  Running the PSU without the main board proofed that there is nothing wrong with the LED strings. So maybe that measurement on string D2 was wrong? Anyway, next logical thing is to troubleshoot the Tcon board for voltages. I guess you found voltages missing, so yes... you are on the right track. Just to make sure, does the Tcon get power from the main?
                  Last edited by CapLeaker; 12-09-2017, 08:51 PM.

                  Comment

                  • karthur
                    Senior Member
                    • Nov 2015
                    • 150
                    • United States

                    #10
                    Re: Samsung UN60EH6000 Tries to come on, but stops

                    Originally posted by CapLeaker
                    ....So maybe that measurement on string D2 was wrong?
                    I re-checked the D1 and D2. They are both 117Vdc.

                    Originally posted by CapLeaker
                    .... next logical thing is to troubleshoot the Tcon board for voltages. I guess you found voltages missing, so yes... you are on the right track. Just to make sure, does the Tcon get power from the main?
                    There is only one cable going to the T-Con, so it looks like its getting the power from the main. There is 1-3V on various pins on the input side of the T-con. I checked the test ports on the output side (the ribbon cables) going to the panel and there is no voltage there. I am leaning toward the T-Con board being bad.

                    Comment

                    • budm
                      Badcaps Legend
                      • Feb 2010
                      • 40746
                      • USA

                      #11
                      Re: Samsung UN60EH6000 Tries to come on, but stops

                      So you do have 12VDC at the T-CON SMD fuse?
                      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

                      • karthur
                        Senior Member
                        • Nov 2015
                        • 150
                        • United States

                        #12
                        Re: Samsung UN60EH6000 Tries to come on, but stops

                        Originally posted by budm
                        So you do have 12VDC at the T-CON SMD fuse?
                        Bud,
                        Yes, there is 12.75 V on both sides of this fuse (F301).

                        Comment

                        • budm
                          Badcaps Legend
                          • Feb 2010
                          • 40746
                          • USA

                          #13
                          Re: Samsung UN60EH6000 Tries to come on, but stops

                          Try disconnecting the flat cable between the LCD panel and the T-CON board to see some of those Voltages on the T-CON will be present correctly.

                          I cannot see the T-CON board in that picture.
                          Last edited by budm; 12-09-2017, 09:32 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

                          • karthur
                            Senior Member
                            • Nov 2015
                            • 150
                            • United States

                            #14
                            Re: Samsung UN60EH6000 Tries to come on, but stops

                            Bud,
                            My bad. Did not realize the pic of the back was before I removed the entire panel. Here is a couple shots of me checking the input fuse (F301) and the voltage readings on the output side of the T-Con. Ribbon 1 and 2 gave the same readings.

                            If that is not what you were asking for let me know, I can get it.

                            Thanks
                            Kirk



                            Comment

                            • budm
                              Badcaps Legend
                              • Feb 2010
                              • 40746
                              • USA

                              #15
                              Re: Samsung UN60EH6000 Tries to come on, but stops

                              So what are you getting on those test points now without the ribbon cable to the LCD panel in place.
                              You were getting these per your report: On coil L701 and L702, I have 0 and 0.7 volts. These should be 1 and 3.3 Volts. My L302 is 1.0, which is correct. Also on caps L7114 and 7122, I have .01... they should be 35V.
                              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

                              • karthur
                                Senior Member
                                • Nov 2015
                                • 150
                                • United States

                                #16
                                Re: Samsung UN60EH6000 Tries to come on, but stops

                                Originally posted by budm
                                So what are you getting on those test points now without the ribbon cable to the LCD panel in place.
                                You were getting these per your report: On coil L701 and L702, I have 0 and 0.7 volts. These should be 1 and 3.3 Volts. My L302 is 1.0, which is correct. Also on caps L7114 and 7122, I have .01... they should be 35V.
                                I get the same readings at those points with the output ribbon cables connected or not connected.

                                Comment

                                • budm
                                  Badcaps Legend
                                  • Feb 2010
                                  • 40746
                                  • USA

                                  #17
                                  Re: Samsung UN60EH6000 Tries to come on, but stops

                                  That eliminated the shorts in the tab bonding board then.
                                  So you will have to try new T-CON board at this point.
                                  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

                                  • Davi.p
                                    Badcaps Legend
                                    • Sep 2009
                                    • 4266
                                    • Italy - Milan

                                    #18
                                    Re: Samsung UN60EH6000 Tries to come on, but stops

                                    I can't work on the basis of someone other on a YT video, abs. needed a sunlight hires photo of the entire Tcon.
                                    Then if U want i mark places where to test but you don't do as many other that i do the work and they disappear >:-(
                                    ANd.... what are you using as Tester??? i don't see any tip! That tester is... shit... can't you grab a new one?
                                    Get a ZT100 or ZT98 on ebay..
                                    Last edited by Davi.p; 12-10-2017, 06:06 AM.

                                    Comment

                                    • karthur
                                      Senior Member
                                      • Nov 2015
                                      • 150
                                      • United States

                                      #19
                                      Re: Samsung UN60EH6000 Tries to come on, but stops

                                      Originally posted by Davi.p
                                      I can't work on the basis of someone other on a YT video, abs. needed a sunlight hires photo of the entire Tcon.......
                                      Not exactly sure what you mean. I have just been doing research with what I have to work with.

                                      Originally posted by Davi.p
                                      ....
                                      Then if U want i mark places where to test but you don't do as many other that i do the work and they disappear >:-(.....
                                      If you will show/tell me what to test, I can do it, and report back.

                                      Originally posted by Davi.p
                                      ...
                                      ANd.... what are you using as Tester??? i don't see any tip! That tester is... s*it... can't you grab a new one?
                                      Get a ZT100 or ZT98 on ebay..
                                      I don't do this professionally and it works just fine. I get dc Voltages and Ohm readings which is what I need to troubleshoot.
                                      Last edited by karthur; 12-10-2017, 09:22 AM.

                                      Comment

                                      • Davi.p
                                        Badcaps Legend
                                        • Sep 2009
                                        • 4266
                                        • Italy - Milan

                                        #20
                                        Re: Samsung UN60EH6000 Tries to come on, but stops

                                        "Not exactly sure what you mean. I have just been doing research with what I have to work with." I mean i need TCON picture...

                                        "I don't do this professionally and it works just fine. I get dc Voltages and Ohm readings which is what I need to troubleshoot."
                                        But whitout TIP is ridicolous, on a board with very tiny smd components, you risk highly to burn it.. the tester i've said is not professional..

                                        Comment

                                        Related Topics

                                        Collapse

                                        • karthur
                                          Samsung UN60EH6000 Dump
                                          by karthur
                                          I have a Samsung UN60EH6000 that will not turn on. When I turn it on, no start-up melody. Only the screen flickers around the edges. I have replaced the T-con board, but issue persists. I have also checked the voltages on the power board and they seem to be correct.

                                          Power Board: BN44-00500A
                                          T-Con Board: BN95-00944B
                                          Main Board: BN94-05549E

                                          I have pulled off the chip IC901 on the main board. This is a Winbond W25Q128BVFG Chip.

                                          My bin dump is below. Can someone look at this and see if this is good or bad file?

                                          Thanks

                                          ...
                                          12-16-2023, 02:11 PM
                                        • karthur
                                          Samsung UN60EH6000 wont come on after lightning strike.
                                          by karthur
                                          We had a lightning strike a few days ago really close to my house. My Samsung UN60EH6000 was on when it hit. Afterwards, the TV would not come back on.

                                          I had repaired this TV a few years back by replacing the T-Con board. (The post I had on this is repair is here.)

                                          When I turn on the TV, I don't get any start-up melody. The screen just dimly flickers around the edges.

                                          Here is what I have checked.
                                          On the power supply board, 14pin connector:
                                          1 :12.7 Vdc
                                          3 :12.7
                                          5 :12.7
                                          7 :12.7
                                          9 :0
                                          11 :5.
                                          13 :5....
                                          11-01-2023, 06:18 PM
                                        • 6BW6
                                          Win7 Performance test stops
                                          by 6BW6
                                          I had a dodgy Molex Sata lead go bad that cause crashes once in a while, after repairing all is well with no crashing BUT.... Windows performance test stops. I get-:

                                          Problem signature:
                                          Problem Event Name: APPCRASH
                                          Application Name: WinSAT.exe
                                          Application Version: 6.1.7601.17514
                                          Application Timestamp: 4ce798fc
                                          Fault Module Name: atiuxp64.dll
                                          Fault Module Version: 8.14.1.6463
                                          Fault Module Timestamp: 56254af6
                                          Exception Code: c0000005
                                          Exception Offset: 000000000000dc14
                                          OS Version: 6.1.7601.2.1.0.256.48...
                                          05-29-2023, 04:21 PM
                                        • computerbacon79
                                          Dell Inspiron 3480 All in One corrupt Bios issue: reaches Dell logo and stops
                                          by computerbacon79
                                          The Dell Inspiron 3480 I own (the all in one, not the laptop) is not wanting to turn on at all. It goes right to a dell logo, but it stays there forever with no other information on the screen. Holding the automatic Bios repair key combo (ctrl+esc) that should let it read a recovery file off a USB drive gets stuck on a black screen and does nothing. No amount of resetting anything so far has worked, and Dell's own support downloads have not really helped. Ive tried another BIN file I found online using my CH341A, and this got me slightly more, that time it displayed a loading bar that never moved...
                                          05-06-2025, 06:43 PM
                                        • Caimano
                                          Asus P2520L starts and stops ok but no display
                                          by Caimano
                                          Model Asus P2520L
                                          MB P552LA_LJ Rev 2.1 with soldered I3 5010U processor

                                          The laptop charges battery and seem to react to power on, power off, reset regularly, but nothing appears on screen or HDMI or VGA monitor.
                                          Same behaviour when running on battery only, on mains only or on both.
                                          Battery charges fine. RTC battery ok at 3.025V.
                                          When powered on the power on led lits, after a short while the HDD led flashes, but no video. All voltages seem present. ALL_SYSTEM_PWRGD is present, BUFF_PLT_RST# goes high. CPU warms up and fan starts and stop from time to time....
                                          03-29-2023, 03:05 AM
                                        • Loading...
                                        • No more items.
                                        Working...