32LG5030 - lost TCon resistor

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  • Behemot
    Badcaps Legend
    • Dec 2009
    • 4845
    • CZ
    #1

    32LG5030 - lost TCon resistor

    I got this TV with usual symptom - strange colors. It has AS15-G so I went ahead and replaced it for AS15-F. Procedure went well but the result is even worse -- whiteish flickering image. See before and after. It is rather clean, no residue and no shorts anywere, cables are seated OK.

    I noticed I may have lost one SMD resistor, see the third image, as it is not in mine. Not anymore for sure Any idea what the value may be and if it is the problem? The other ressitors around are each of different value.
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    • newtothis
      Badcaps Legend
      • Mar 2013
      • 1556
      • england
      #2
      Re: 32LG5030 - lost TCon resistor

      I knocked some of those off before! LOL Same TCON...

      Notes say its a 210ohm - I can't 100% say this was the initial value resistor but a 210 in place worked on mine

      And yes it screwed my image up as I lost voltage at pins on AS-15. Can confirm by checking test points
      Last edited by newtothis; 05-25-2015, 08:06 AM.

        Comment

        • Behemot
          Badcaps Legend
          • Dec 2009
          • 4845
          • CZ
          #3
          Re: 32LG5030 - lost TCon resistor

          Yeah well there are voltages here but strange, from 14 it goes slowly up towards 5 V…than nothing, than it jumps to around 12-13 V and it it oscillates, they are not stable as I am used to.

          OK so 210 ohm, it may be, I'll try to have a look after some from graphics or so. This is going to be hell, it is so bloody small 0201 I think, 0402 at most.

          ADD// I've soldered 220ohm resistor in and no change at all. Seems that something else is probably bad too. Do you think swapping the whole TCon might help? Or is it signal board?
          Last edited by Behemot; 05-25-2015, 11:36 AM.
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            • flocko
              Badcaps Legend
              • Nov 2012
              • 1121
              • uk
              #4
              Re: 32LG5030 - lost TCon resistor

              there are a lot of bad AS15 ICs on the market , I think something like 1 in 5 so I would try fitting another before buying a new T.con Flocko

                Comment

                • Behemot
                  Badcaps Legend
                  • Dec 2009
                  • 4845
                  • CZ
                  #5
                  Re: 32LG5030 - lost TCon resistor

                  These were brand new and all of them worked OK so far…but I guess I could try, need to buy more anyway, thiw was the last one
                  Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

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