BN41-01795A short, no led no start

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  • disorder
    Senior Member
    • Sep 2015
    • 154
    • france

    #1

    BN41-01795A short, no led no start

    hello,

    i need some help from the team
    i have a samsung tv led with bn41-01795A motherboard
    the tv not start, no red light, no reaction on start up button
    i have tested the voltage on SMPS : all 13v; 5v 3.3v and so...
    on th emotherboard some mesures seems ok : 3.3v 5v 1.6v
    but i have strictly nothing at the IR/On board : neither 3.3v, key 1 or 2 or LED

    IC202 and ic1201 are hot.
    i find two caps that are shorted : c205 near ic201 and c1215 near ic1201

    i test with isoprpylic acid and power supply but nothing very sure about this two guys.

    have you already have same issues here ?

    i will try to remove them but not sure it will work.

    thank you
  • disorder
    Senior Member
    • Sep 2015
    • 154
    • france

    #2
    Re: BN41-01795A short, no led no start

    this was not that, i have remove this two caps, ic201 ic1362 and it is the same

    i have short on pin8 of ic1362 too

    Comment

    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA

      #3
      Re: BN41-01795A short, no led no start

      You will get a lot more help if you provide good clear pictures of the boards and the P/N as printed on the IC so you can look up the spec sheet to find out what the IC's are.
      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

      • disorder
        Senior Member
        • Sep 2015
        • 154
        • france

        #4
        Re: BN41-01795A short, no led no start

        hello,
        i have found the guilty guy : it is wt61p805 weltrend chip.
        inside short of 3.3v main power
        damned

        i found this item on ebay or aliexpress but i think it needs to be flashed, no ?

        someone know where i can buy one ?
        thank you

        Comment

        • geokyri
          electronist
          • Nov 2012
          • 3
          • Romania

          #5
          Re: BN41-01795A short, no led no start

          "disorder", how did you solve the tv set ... ?

          Comment

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