Generic (Technika ) 32" LCD TV Fault

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  • 90Ninety
    Senior Member
    • Aug 2011
    • 86
    • UK Mains Voltage 240V 50 Hz
    #1

    Generic (Technika ) 32" LCD TV Fault

    Ok

    I had brought a faulty TV for very cheap , knowing it was faulty , in hope that I could repair it .

    Symptoms:

    Upon initial inspection , I noticed there is impact damage to the top corner casing , though the screen seems intact and clean. The TV once plugged in shows a standby red light , I can press the power button and the TV then makes a short humming along with a short buzz which lasts for 5-7 seconds . The TV LCD backlight appears to then come on , though the screeen remains plain black for approximately 1 minuite .

    after a minute or so various thin cloured lines start slowly appearing , until It finally settles like this :http://img268.*************/img268/9902/dsc1042zm.jpg


    I then dismantled everything , and Visually checked all the Caps , connectors and soldering Everything looked fine . I double checked and re-plugged the ribbon connectors on the T-Con board . I tried to turn on TV after checking over , though it is still the same

    On a plus note , apart from the LCD panel and housing all replacement parts are available on Ebay . I am currently watching a replacement inverter board and T-con board on Ebay . Seems like this TV uses a TCON board that is also used in Sony models

    Judging by the damage on the TV housing , I have a slight hunch it may be a faulty panel , though I hope not

    I have searched the internet and people with simmilar problems have mentioned the T-COn board and Cap replacements as possible solutions . What do you thing could be the fault with this TV, how shall I rectify it? I would like to be certain

    Look foreward to hear from you all

    Peace
    Last edited by 90Ninety; 08-25-2011, 06:31 PM.
    Tags: None
    • gorr35
      Senior Member
      • Nov 2010
      • 127
      #2
      Re: Generic (Technika ) 32" LCD TV Fault

      I have the same problem with my Proview PA-40JK1A....except the symptoms on mine are reversed. Started out with thin vertical lines and buzzing sound and now just a black screen and no power light....weird. Me and a friend got mine going for about 3 months by using the heat gun trick but it's down again but even worse now. I hope someone can help you with yours but my post is so old, nobody looks at it anymore.

        Comment

        • 90Ninety
          Senior Member
          • Aug 2011
          • 86
          • UK Mains Voltage 240V 50 Hz
          #3
          Re: Generic (Technika ) 32" LCD TV Fault

          @ gorr35

          On which board did you use the heatgun ?

          Have you tried replacing the faulty part?

            Comment

            • gorr35
              Senior Member
              • Nov 2010
              • 127
              #4
              Re: Generic (Technika ) 32" LCD TV Fault

              Originally posted by 90Ninety
              @ gorr35

              On which board did you use the heatgun ?

              Have you tried replacing the faulty part?
              The heat gun was used on the power supply, the mainboard and the tuner board. A hair dryer will work also. I will replace the faulty part when I figure out which one it is. My first thought was the T-Con board....until the TV started going out all together.

                Comment

                • Th3_uN1Qu3
                  Believe in
                  • Jul 2010
                  • 6031
                  • Romania
                  #5
                  Re: Generic (Technika ) 32" LCD TV Fault, Black screen with colured vertical lines

                  Originally posted by 90Ninety
                  Judging by the damage on the TV housing , I have a slight hunch it may be a faulty panel , though I hope not
                  The panel is good, otherwise it would have exhibited the issue from the very start. You have a Tcon or main board failure. gorr35's suggestion to use a heat gun on the large ICs is good, try it.
                  Originally posted by PeteS in CA
                  Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                  A working TV? How boring!

                    Comment

                    • 90Ninety
                      Senior Member
                      • Aug 2011
                      • 86
                      • UK Mains Voltage 240V 50 Hz
                      #6
                      Re: Generic (Technika ) 32" LCD TV Fault

                      A little piece of advise my father gave me: If it drives, flies, floats, or fucks, it will cause you problems.
                      LMAO

                      The panel is good, otherwise it would have exhibited the issue from the very start
                      Well I am not sure of the background of the TV , though as mentioned above the TV casing/house/shell is cracked in the corner . So it looks like it has been dropped at some point, though I am unsure if this caused the damage . I brought it faulty on purpose btw . You may be right though , the LCD panel seems clean and intact . I've ordered a T-con board replacement anyway , I will let you know if that fixes the fault

                      use a heat gun on the large ICs
                      Which parts are the IC's ? I presume they are the Square chip's on the boards no?

                      I didn't want to start working without knowing which parts to heat up with the gun


                      On a side note I have re-flowed a ps3 using a heat- gun , worked like a charm afterwards

                        Comment

                        • Th3_uN1Qu3
                          Believe in
                          • Jul 2010
                          • 6031
                          • Romania
                          #7
                          Re: Generic (Technika ) 32" LCD TV Fault

                          Originally posted by 90Ninety
                          Which parts are the IC's ? I presume they are the Square chip's on the boards no?
                          Yes. IC stands for Integrated Circuit btw.
                          Originally posted by PeteS in CA
                          Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                          A working TV? How boring!

                            Comment

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