PLASMA TV 42PA4520-TJ: Vs Short cicuited...

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  • Ahakim
    Member
    • Apr 2013
    • 64
    • USA
    #1

    PLASMA TV 42PA4520-TJ: Vs Short cicuited...



    I'm working on an LG PLASMA TVC (model: 42PA4520). Short cicuit because of faulty FETs. I can read the following on 2 of these:
    G7S313u
    I R 235P
    B3

    and

    G7S313U
    I R 236P
    B4

    They seem to be N-channel and P-channel respectively (or vice-versa).
    Could anyone help to identify these 2 FETs and/or find possible replacement parts for them? Which one is the N-channel? (or are they both the same?)
    thanks...
    Last edited by Ahakim; 05-11-2014, 06:39 AM.
    Tags: None
    • tw2005
      Badcaps Legend
      • Oct 2011
      • 6458
      • Australia
      #2
      Re: PLASMA TV 42PA4520-TJ: Vs Short cicuited...

      Not sure how you concluded 1 is N and the other P channel when they both have the same part number.

      IR = International Rectifier

      (G7S313U)PDP TRENCH IGBT TRANSISTOR IRG7S313UPbF BY INTERNATIONAL RECTIFIER.

      GOOGLE really does work sometimes.



      Is a 42PA4520 a US market TV?

        Comment

        • Ahakim
          Member
          • Apr 2013
          • 64
          • USA
          #3
          Re: PLASMA TV 42PA4520-TJ: Vs Short cicuited...


          Many thanks for the reply...
          In fact the 2 components are designated on PC board as Q's not D's...This why I assumed they should be FET's.. Next to these I can see other similar (in shape) components labeled as D's: each one (when tested) indicates that it is: 2 diodes integtated in one package (the usual double-diode components used in Power Supplies OUTs of of LCD, Plasma...TVs)...
          So what do you think...?
          I guess I must figure out what their function is in the circuit...
          I don't have the schematic...

            Comment

            • tw2005
              Badcaps Legend
              • Oct 2011
              • 6458
              • Australia
              #4
              Re: PLASMA TV 42PA4520-TJ: Vs Short cicuited...

              Not sure iff I'd bother at component level. Plenty available in the US.

              http://www.ebay.com/itm/LG-42PA4500-...item3a7c6eb1ba

              http://www.ebay.com/itm/LG-42PA450C-...item3f34150e16

              http://www.ebay.com/itm/YDRVTP-PCB-E...item2ec07a1041

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