Samsung LN46A650A 1FXZA dark screen

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Rmasters3
    Senior Member
    • Mar 2010
    • 126

    #1

    Samsung LN46A650A 1FXZA dark screen

    Just scavenged this one and this is what I have is a darker screen, where some level of image is visible. I do get an audio tone when it starts up. Have not had the time to remove the back and check caps in PS or other boards. Backlights on both side seem OK, looking in from the back.

    Any suggestions as to what to look for?

    Thanks
    Attached Files
  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #2
    Re: Samsung LN46A650A 1FXZA dark screen

    Some models of the SAMSUNG will be in the dim mode until you have the video sources. Also look at the user setup menu to see if it has ambient light sensing function that adjust the backlights level based on room lights.
    Last edited by budm; 05-11-2016, 09:59 AM.
    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

    • ReeceyBurger123
      Never Give Up !
      • May 2014
      • 7325
      • Britain

      #3
      Re: Samsung LN46A650A 1FXZA dark screen

      So wait, is part of the Lcd darker ?
      Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

      https://www.facebook.com/Telford-Tel...7894576335359/

      Comment

      Related Topics

      Collapse

      • bohaboha
        Samsung UE70TU6905 BACKLIGHTS AND SOUND ON NO PICTURES BUT SCREEN NOT DARK
        by bohaboha
        Hi it looks like everything works don't know where to test except the 390v in the 2 capacitor in the hot side of the power supply and the weird 180v in the diodes in the cold side that should be discharged it is writin on the circuit no more you can read what is written on the circuit quite srrange color mixiing yellow and white
        anyhow i couldn't t read anything else
        the backlight is on strong and the screen does not get dark or very dark but no pictures
        the mainborad feels a bit hott on the black part i test it to 52 degree's against 34 to 40 on the rest of it
        ...
        01-02-2025, 08:04 PM
      • Chrissygizmo
        samsung galaxy ao2s very temperamental after screen replaced
        by Chrissygizmo
        Hi , I've recently replaced the screen in my Samsung galaxy ao2s, at first it wouldn't even turn on, it had the charging symbol on the screen when plugged in but the green circle wasn't going around to show it charging....
        Ive eventually managed to get it on and working but it's very temperamental...

        The battery icon always reads as 50% , when the phone goes into lock screen mode i sometimes can't get the screen back on unless I plug the charger in to get it to light up, also it keeps putting the camera app on.. u think it could be something to do with the side buttons. ...
        05-26-2024, 12:05 AM
      • Topcat
        Samsung UN75RU7200FXZA - Right 1/3 Portion of Screen Dark
        by Topcat
        Set from 2019.....sad this is all they last anymore. Ok, obviously a backlight problem. From what I understand there are 3 strips in these, mounted vertically....one seems to be bad. The image is present behind the darkness, not a LVDS or TCON issue.







        This TV is a beast. I can't even manhandle it by myself, let alone try and lift the screen out to restrip it.....but I haven't even gotten this far yet....I can't seem to find strips for it.

        I found a set for the UN75RU7100FXZA but not the 7200.

        https://...
        05-29-2023, 08:33 PM
      • JunkmanJimbo
        Samsung UN55J6200AFXZA Splash Screen Comes up, goes out, screen flashes one time and won't turn off
        by JunkmanJimbo
        Samsung UN55J6200AFXZA Splash Screen Comes up, goes out, screen flashes one time and then tv won't turn off.
        No picture. No sound that I can tell. Backlights are on and have been checked. Flashlight test no image on screen. I replaced the Eprom chip hoping that was the problem but nothing changed.
        Please help. Thanks in advance!
        08-12-2025, 11:45 AM
      • Kiberge
        Samsung LH82QENELGC/EN Help needed - Static line on screen
        by Kiberge
        HI guys!

        I've got a Samsung LH82QENELGC/EN with a problem and need some advice and I hope this is the forum to use?
        I'm from Norway so I'd like to apology in advance if my description of the fault is kind of simple or the names on the components are way off. 😊

        the TV is powering up, working as normally and picture is all good, except a 1.5-inch-wide vertical line of snow/static across the screen.


        This TV is a Signage Display/Public Display version and it's been used at my work for 4-5 years showing commercials 24/7. The fault occurred when...
        04-22-2024, 11:28 AM
      • Loading...
      • No more items.
      Working...