LED circuit of LINSAR 55LED900

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  • jbfr_54
    Senior Member
    • Dec 2012
    • 52
    • France
    #1

    LED circuit of LINSAR 55LED900

    Hi,
    The LED inverter part of this TV has blown (board TP.MS 3458.PC757) so I have to replace several parts but they are not identified. Has anyone this board schematic so I could repair it ?
    PWM circuit schematic concerned is MOSFET IPS80R900 and IC LD7750 and surrounding components.
    Thanks.
    Jean
    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: LED circuit of LINSAR 55LED900

      Can we see good clear straight shots of the whole top and bottom side of the board and the whole backside of the TV showing all the boards so we can see what we are dealing with?
      Use 'Go Advanced' to attach the pictures.
      Last edited by budm; 06-07-2020, 04:33 PM.
      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

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