coby LED 2326 will not turn on

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • CR Designs
    Badcaps Veteran
    • Dec 2012
    • 430
    • USA

    #21
    Re: coby LED 2326 will not turn on

    Originally posted by tom66
    Good news is, neither can we. This board will use at least 4 layers meaning two hidden between the top and bottom. More likely it will be 6 layers making it even harder.
    Thanks Tom66, What do you think?
    Last edited by CR Designs; 03-28-2013, 04:14 PM.

    Comment

    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK

      #22
      Re: coby LED 2326 will not turn on

      Check the power supply and see if those 3.3V and 5V are actually connected together so are all supposed to be 5V.
      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

      • selldoor
        Slow Learner
        • Dec 2010
        • 7870

        #23
        Re: coby LED 2326 will not turn on

        I am still concerned about the black glue - test it with meter on ohms 200k to see if is conductive. In the same place on the back of the board there is a black patch. If the board is burnt through some of the internal traces could be destroyed.
        Please upload pictures using attachment function when ask for help on the repair
        http://www.badcaps.net/forum/showthread.php?t=39740

        Comment

        • CR Designs
          Badcaps Veteran
          • Dec 2012
          • 430
          • USA

          #24
          Re: coby LED 2326 will not turn on

          Originally posted by CR Designs
          Thanks Tom66, What do you think?
          No, There's only 5v and 12v leaving the power board going to the main board. The 3.3v is on the another plug that goes to the on/off switch and that's the only voltage shown on that plug..

          Comment

          • CR Designs
            Badcaps Veteran
            • Dec 2012
            • 430
            • USA

            #25
            Re: coby LED 2326 will not turn on

            Originally posted by selldoor
            I am still concerned about the black glue - test it with meter on ohms 200k to see if is conductive. In the same place on the back of the board there is a black patch. If the board is burnt through some of the internal traces could be destroyed.
            Selldoor, It's not conductive. It's some type of glue dark brown color. I tried to remove it with Isopropyl alcohol 70%. It didn't work at all.

            Comment

            • selldoor
              Slow Learner
              • Dec 2010
              • 7870

              #26
              Re: coby LED 2326 will not turn on

              Ok but what is the mark on the back = os it the same - does the glue go right through as some sort of repair?.
              Next time its together can you do an overall picture to show the layout of the boards.
              and where the led cable connects to.
              Please upload pictures using attachment function when ask for help on the repair
              http://www.badcaps.net/forum/showthread.php?t=39740

              Comment

              • CR Designs
                Badcaps Veteran
                • Dec 2012
                • 430
                • USA

                #27
                Re: coby LED 2326 will not turn on

                Originally posted by selldoor
                Ok but what is the mark on the back = os it the same - does the glue go right through as some sort of repair?.
                Next time its together can you do an overall picture to show the layout of the boards.
                and where the led cable connects to.
                I took some finger nail polish remover to it and that took it off. On the back looks like its coming where the heat sink is attached. I don't think it is going through. The spots do not line up exactly . On the front of the board looked like it was a drip. There were a few other spots on the board that had drips

                Comment

                • CR Designs
                  Badcaps Veteran
                  • Dec 2012
                  • 430
                  • USA

                  #28
                  Re: coby LED 2326 will not turn on

                  Originally posted by selldoor
                  Ok but what is the mark on the back = os it the same - does the glue go right through as some sort of repair?.
                  Next time its together can you do an overall picture to show the layout of the boards.
                  and where the led cable connects to.
                  Selldoor, Here's the pictures you wanted of LED connection,it is circled in the picture. The other picture of the boards in place
                  Attached Files

                  Comment

                  • selldoor
                    Slow Learner
                    • Dec 2010
                    • 7870

                    #29
                    Re: coby LED 2326 will not turn on

                    Thanks
                    U3 3251 R64 11051 is a Bit 3251 - you should have spotted that its in the thread
                    where you posted about getting it open
                    Data sheet:
                    https://www.badcaps.net/forum/attach...9&d=1346785892
                    On ebay http://www.ebay.co.uk/itm/2PCS-BIT32...item3a7f0fe386

                    Next time its is possible can you test that link just above the socket where it says
                    lvds 5v. Looks like a ferrite bead or an inductor as it is L board designator just test for continuity ohms - should be nilish. Also when you can test the voltage on both sides
                    with respect to ground.

                    Perhaps PM nte hicks and ask what happened to his?
                    Last edited by selldoor; 03-29-2013, 09:29 AM.
                    Please upload pictures using attachment function when ask for help on the repair
                    http://www.badcaps.net/forum/showthread.php?t=39740

                    Comment

                    • CR Designs
                      Badcaps Veteran
                      • Dec 2012
                      • 430
                      • USA

                      #30
                      Re: coby LED 2326 will not turn on

                      Originally posted by selldoor
                      Thanks
                      U3 3251 R64 11051 is a Bit 3251 - you should have spotted that its in the thread
                      where you posted about getting it open
                      Data sheet:
                      https://www.badcaps.net/forum/attach...9&d=1346785892
                      On ebay http://www.ebay.co.uk/itm/2PCS-BIT32...item3a7f0fe386

                      Next time its is possible can you test that link just above the socket where it says
                      lvds 5v. Looks like a ferrite bead or an inductor as it is L board designator just test for continuity ohms - should be nilish. Also when you can test the voltage on both sides
                      with respect to ground.

                      Perhaps PM nte hicks and ask what happened to his?
                      selldoor, here's the continuity test 1.001, voltage test had 7.3v one way and had 000.0v the other way.I tested this at R556 is that what you wanted tested? I PM nte he didn't get it fixed. He couldn't find a replacement board his board is burnt.

                      Comment

                      • selldoor
                        Slow Learner
                        • Dec 2010
                        • 7870

                        #31
                        Re: coby LED 2326 will not turn on

                        No sorry above and to the right may be L58 There are 3 labels lvds3.3v
                        lvds5v and lvds 12v Only the 5v is populated test each side with red probe
                        black probe on ground.


                        Bit odd each side of that resistor being 7v different that may be important.
                        Please upload pictures using attachment function when ask for help on the repair
                        http://www.badcaps.net/forum/showthread.php?t=39740

                        Comment

                        • CR Designs
                          Badcaps Veteran
                          • Dec 2012
                          • 430
                          • USA

                          #32
                          Re: coby LED 2326 will not turn on

                          Originally posted by selldoor
                          No sorry above and to the right may be L58 There are 3 labels lvds3.3v
                          lvds5v and lvds 12v Only the 5v is populated test each side with red probe
                          black probe on ground.


                          Bit odd each side of that resistor being 7v different that may be important.
                          I could not get a read on lvds5v the numbers just kept plusing higher never did stop

                          Comment

                          • selldoor
                            Slow Learner
                            • Dec 2010
                            • 7870

                            #33
                            Re: coby LED 2326 will not turn on

                            Hmm perhaps wasnt specific enough -power off - test across it for resistance.
                            Power on test for voltage with respect to ground screw.
                            Please upload pictures using attachment function when ask for help on the repair
                            http://www.badcaps.net/forum/showthread.php?t=39740

                            Comment

                            • CR Designs
                              Badcaps Veteran
                              • Dec 2012
                              • 430
                              • USA

                              #34
                              Re: coby LED 2326 will not turn on

                              Originally posted by selldoor
                              Hmm perhaps wasnt specific enough -power off - test across it for resistance.
                              Power on test for voltage with respect to ground screw.
                              Selldoor, I can't get a read on this resistance or volts. The numbers just keep pulsing higher or lower. but they never stop or hold on a set of numbers.

                              Comment

                              • selldoor
                                Slow Learner
                                • Dec 2010
                                • 7870

                                #35
                                Re: coby LED 2326 will not turn on

                                I am sorry, I understand what you say, but I dont know what that means. Perhaps it is a pulsed signal to tell something on the board the lvds is at 5 volts - perhaps budm or tom
                                will comment. We will just have to test something else.
                                Please upload pictures using attachment function when ask for help on the repair
                                http://www.badcaps.net/forum/showthread.php?t=39740

                                Comment

                                • CR Designs
                                  Badcaps Veteran
                                  • Dec 2012
                                  • 430
                                  • USA

                                  #36
                                  Re: coby LED 2326 will not turn on

                                  Originally posted by selldoor
                                  I am sorry, I understand what you say, but I dont know what that means. Perhaps it is a pulsed signal to tell something on the board the lvds is at 5 volts - perhaps budm or tom
                                  will comment. We will just have to test something else.
                                  When I try to read resistance or volts The number keep getting higher like
                                  05.00 05.01, 06.26 , 06.89 It never stops climbing. It never stops on a set of numbers

                                  Comment

                                  • CR Designs
                                    Badcaps Veteran
                                    • Dec 2012
                                    • 430
                                    • USA

                                    #37
                                    Re: coby LED 2326 will not turn on

                                    Selldoor, I tried another meter and got these readings meter set at 200ohms reading was 01.0 both ways. Set meter to DCvolts and got a reading of .001 both ways.

                                    Comment

                                    Related Topics

                                    Collapse

                                    • brzostos
                                      HP ENVY X360 15-EU0005NA 203037-2 does not turn on, something whistles on the board.
                                      by brzostos
                                      Hello, HP laptop model 15-EU0005NA. It does not turn on, 1 in 100 manages to turn it on then after a while it freezes/disappears/flashes, etc.

                                      After removing the motherboard and connecting the board with RAM to the power supply, I noticed that at first all voltages start correctly and after a few seconds 3.3V on the PL4501 coil disappears and somewhere in this area something starts beeping on the board, sometimes after touching it with a finger in the area of PL4551 it stops beeping and 3.3V appears again.

                                      Original HP 150W power supply, the diode in the power socket lights...
                                      10-01-2024, 01:34 AM
                                    • Tynan Dill
                                      Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?
                                      by Tynan Dill
                                      I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.

                                      Upon bringing it home and plugging it up, it showed a standby light.

                                      I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.

                                      The screen seems to blackout and stay black, but with a flashlight I can see the display.

                                      With my Playstation 4 connected via HDMI, and running a game I can hear sound.

                                      Assuming...
                                      11-22-2024, 01:46 PM
                                    • m1ch43lzm
                                      HP Pavilion 15-eh Board DAG7HAMB8F0 - CPU throttling to 0.4GHz (PROCHOT_EXT) and black screen
                                      by m1ch43lzm
                                      Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
                                      Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic...
                                      05-12-2025, 08:37 PM
                                    • Hakuu
                                      LG OLED77G1PUA - No Video / Audio after a TCON Board change and Software Update
                                      by Hakuu
                                      Hi There,

                                      This TV was auto switching off after few seconds with some vertical lines on the screen, so got a new TCON board and replaced it.

                                      After replacing the TCON board it was working fine and i set it up with everything, used for few hours, then had the bright idea to update the software on it. During the update process, TV switched off and now no audio or video. No relay switch sound.

                                      More Details

                                      TV Model - LG OLED77G1PUA

                                      Got the same exact TCON board from TVPartsToday and replaced it. But didnt transfer the EPPROM data (didnt...
                                      07-12-2023, 02:37 PM
                                    • jb_Bak
                                      Sony xbr-65x900c main board issues?
                                      by jb_Bak
                                      Hey guys great forum glad to have found it. I bought a Sony XBR 65X900C cheaply because it didn't work. No signs of life at all not even a light/led. All I hear is a brief high voltage sound when I throw the power to it.

                                      Didn't see any obvious signs of damage so right away started checking voltages. This is what I see:
                                      Power Board Connector that goes to Main board
                                      CN6401
                                      Pin 01 NC
                                      Pin 02 NC
                                      Pin 03 "BL_ON": 0V
                                      Pin 04 "N/C"
                                      Pin 05 "STBY 3.3V": 3.5V
                                      Pin 06 "GND": N/C
                                      Pin 07 "AC_OFF"...
                                      09-27-2021, 04:52 PM
                                    • Loading...
                                    • No more items.
                                    Working...