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Samsung LN32A300J1D Whitescreen

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    #1

    Samsung LN32A300J1D Whitescreen

    Samsung Model: LN32A300J1D
    Model Code: LN32A300J1DXZA
    T-Con Board: M$35-D013932-L$CTR833202419 Bar Code with AS15-G IC

    Not a technician just trying to learn to fix my TV. Any help appreciated. TV powers on normally and has good sound, but the display is white with a very dim hard to see image in the background. I have searched the forum for this model TV and it seems like the place to start is to clean and reset the ribbon cables, which I have done and no change. Next I have checked the voltages on the T-Con with these results.
    GW1: 4.41, GW2: 10.06, GW3: 9.65, GW4: 9.04, GW5: 8.60, GW6: 7.56, GW7: 7.14, GW8: 7.09, GW9: 10.29, GW10: 5.44, GW11: 4.56, GW12: 3.58, GW13: 2.99, GW14: 0.00, VCM: 13.51. Do these look within tolerance?

    The AS15-G IC is very hot to touch. Is there more test points I should check? Is more information or pictures needed? Thanks
    Attached Files
    Tags: None
    #2
    Re: Samsung LN32A300J1D Whitescreen

    You have bad GAMMA IC (AS15).
    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

      #3
      Re: Samsung LN32A300J1D Whitescreen

      T-CON Board defective. You can get this exact replacement from ShopJimmy (SJ). They are reasonably priced and they have friendly assistants to answer any questions you may have. I purchased this very part from them not too long ago and it worked on first go and is still working about 3-4 months ago. Great place to shop... Cheers

      Comment

        #4
        Re: Samsung LN32A300J1D Whitescreen

        Thanks. I was afraid that was the problem but was hoping for the best. Will see about finding a replacement or having the IC replaced locally.

        Comment

          #5
          Re: Samsung LN32A300J1D Whitescreen

          You can purchase the AS15's for a few dollars on ebay. You will likely need someone with a hot air rework station to change them though.

          Comment

            #6
            Re: Samsung LN32A300J1D Whitescreen

            It would be quite rewarding to replace the AS15 IC and get this set working again. However if you don't have the skill or tools to do an operation like this then just get anew T-CON board from SJ.....Thanks

            Comment

              #7
              Re: Samsung LN32A300J1D Whitescreen

              Thanks for the advice. I am trying to get my nerve up to tackle replacing the chip. Good excuse to get a hot air station!

              Comment

                #8
                Re: Samsung LN32A300J1D Whitescreen

                Make sure you practice on some scrap boards first. There are some good tutorial videos on YouTube like https://www.youtube.com/user/SolderingGeek
                "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                -David VanHorn

                Comment

                  #9
                  Re: Samsung LN32A300J1D Whitescreen

                  Yes replacing the chip would be a good way of sharpening one's skill....and too...a very good excuse to get the hot air station.. HEE...HEE..

                  Comment

                    #10
                    Re: Samsung LN32A300J1D Whitescreen

                    Now if I can just convince my wife!

                    Comment

                      #11
                      Re: Samsung LN32A300J1D Whitescreen

                      That's hard part......can't help you there, Bud

                      Comment

                        #12
                        Re: Samsung LN32A300J1D Whitescreen

                        I used to be horrble at replacing ics and such. Just takes alot of practice. Now im a pro... and of course I give credit too my Aoyue 968a smd rework unit..
                        Did I leave the soldering iron on?

                        Comment

                          #13
                          Re: Samsung LN32A300J1D Whitescreen

                          Wife said no to rework station so to keep peace in the family I got a T-Con board off ebay. TV now working great. Thanks for the help.
                          Attached Files

                          Comment

                            #14
                            Re: Samsung LN32A300J1D Whitescreen

                            You asked her ? Man, you must be newly married

                            Comment

                              #15
                              Re: Samsung LN32A300J1D Whitescreen

                              No, 60 years. I learned a long time ago how to keep peace in the family.

                              Comment

                                #16
                                Re: Samsung LN32A300J1D Whitescreen

                                Thanks Bluecatfish and everyone who commented. I had the same problem, and I just now ordered the replacement T-Con board. Since i'm starting out, I figured working on a hot air station would be too much.

                                P.S. Congrats on keeping the peace.

                                Comment

                                  #17
                                  Re: Samsung LN32A300J1D Whitescreen

                                  Also essential is a microscope to get the image big enough to snap a pix
                                  that will clearly show the IC legs attached properly to each trace on the board.
                                  That will avoid re-does .And be advised that an AS-15 and AS-19 are not subbed
                                  either way. Buy both in quantity from China for a buck apiece !

                                  Comment

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