Samsung syncmaster t220 Powers on no screen.

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  • eniac22
    Senior Member
    • Jun 2012
    • 124
    • Greece

    #41
    Re: Samsung syncmaster t220 Powers on no screen.

    Originally posted by eniac22
    I have also problem with this monitor, backlight is working for 1 sec and then black screen, i check the capacitors with a esr meter and seams to be good.

    - I've checked the voltages at the connector:

    1 -> 0.11V (BL_ADJ_PWM)
    2 -> 15.38V
    3 -> 0V (GND)
    4 -> 0V (GND)
    5 -> 5.20V (5V_IP_1)
    6 -> 5.20V (5V_IP_2)
    7 -> 0.54V (BL_ADJ_ANALOG)
    8 -> 2.56V (BL_EN)
    9 -> 3.25V
    10 -> 2.97V (LED)
    11 -> 3V (KEY1_OUT)
    12 -> 1.78V (KEY2_OUT)

    any help?
    Ok i found that 2 of 4 CCFL lambs is dead, i try lambs from other screen and is working ok

    Comment

    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA

      #42
      Re: Samsung syncmaster t220 Powers on no screen.

      If you look at the thread, you will see that your pins:
      1 -> 0.11V (BL_ADJ_PWM)
      7 -> 0.54V (BL_ADJ_ANALOG)
      What do you get on those two pins now?
      Last edited by budm; 07-26-2017, 10:46 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

      Comment

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