Announcement

Collapse
No announcement yet.

LG 50LA6970 backlight turns off after 2-4 minutes

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    LG 50LA6970 backlight turns off after 2-4 minutes

    So I have a lot of experience with LED's going bad. Most of the time they either wont turn on at all or they come on for a split second and then go out (and you can still see the picture doing the flashlight test. The LED's on this set go off after about 3 minutes. I can even play some XBOX or cable on it for these 3 minutes - then they go out and I can still see the picture with the flashlight. My question is: Is this looking more like a LED Driver board problem because of the amount of time it takes for the LED's to go out? From my experience they usually turn off/go out fast if one or a couple LED's are bad on a strip/strips. Also, why would it take long for the backlight to go out if an LED were going bad. When I get home I am going to see if when they go out, I can turn the TV on again and see if they stay out or come back on again for another 2-4 minutes. I have LED strip tester as well that I can use on the LED's but havent taken it apart yet. Thanks for the help or comments (I'd like to know what you guys think from what i've told you). I will get pics of boards, etc later today.
    Tags: None
    #2
    Re: LG 50LA6970 backlight turns off after 2-4 minutes

    My guess is it's the LED backlights and not the Driver. If one LED on a strip is bad it will take longer to shut down. Maybe not every strip is bad in this case, hence the reason for the longer time to shutdown.

    Comment

      #3
      Re: LG 50LA6970 backlight turns off after 2-4 minutes

      Thanks for the quick reply! Yeah, I guess that is true, it could just be 1 led on 1 strip. Ill take the LED strips out and test to see who the culprit is... Ill also look for bad grounds/solder joints. Someone else was having issues with those on another one of these but their symptoms were the backlights were flashing on/off like flickering

      Comment

        #4
        Re: LG 50LA6970 backlight turns off after 2-4 minutes

        Flashing on/off could be the same issue as with yours. Be careful handling that big screen, they crack easy.

        Comment

          #5
          Re: LG 50LA6970 backlight turns off after 2-4 minutes

          Going to check this over the weekend, havent had time yet. Oh yeah, have to be careful. I have now successfully fixed 2 75" Samsungs that had bad LED strips so I know how it is with large panels... its freakin scary LOL

          42-60" seem like nothing to remove now haha

          Comment

          Previous template Next
          Working...
          X