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N3251w red light only no image

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    #21
    Re: N3251w red light only no image

    I was testing in circuit. They are bad. I am unsure how to find the correct part. i know I will probably replace all on that side. q4, d7 , and q3. How do i find out what part i need ?

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      #22
      Re: N3251w red light only no image

      Is your board FSP212-3F01?
      If it is, it is known to have bad transistor and Zener diode.
      http://s807.photobucket.com/user/bud...tml?sort=3&o=1

      Unless I have bad eyes, the diode and the transistor do not look like it burnt up to me, if they are, that would have blown the main AC fuse.
      Last edited by budm; 05-15-2014, 10:22 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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        #23
        Re: N3251w red light only no image

        I suspect you'll have to try reading the part numbers off the side of the devices. The schematic is useless in that respect and has no part numbers, unfortunately

        Unless you can find another TV that uses the same PSU and has a decent schematic. I have looked for another but can't find one so far.

        Going by http://s807.photobucket.com/user/bud...ml?sort=3&o=16 it looks like Q4 is an AP04N70BF

        You'll have to figure out D7 though. What does it say on it?
        Last edited by Agent24; 05-15-2014, 10:36 PM.
        "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
        -David VanHorn

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