LG 6V LED Backlights

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • sickboy
    Senior Member
    • Jun 2015
    • 86
    • UK

    #1

    LG 6V LED Backlights

    I've been repairing quite a few LG tvs with the usual backlight problems over the past few months. I'm talking about replacing individual leds rather than fitting new strips.
    The 3v types are fine, but does anyone else have a problem with bright spots on the screen after replacing the 6v type? This is the type with the thick round lens that also falls off with the slightest touch.

    The type of replacement LED I'm using is a 2 watt 3535 6v, which is the most common one on eBay advertised for use with these LG models. At first I was thinking that they just seemed brighter in comparison when used alongside the original "aged" leds, but the bright spots on the screen are really quite defined and I really do think that they are brighter than they should be. Even lowering the backlight level in the menu doesn't quite get rid of the bright spots.
    Does anyone else have this issue? Or does anyone have a link for LEDs they use?
  • neilc6
    Badcaps Legend
    • Nov 2015
    • 1550
    • Canada

    #2
    Re: LG 6V LED Backlights

    Bright spots are caused by the lenses not being perfectly centered. If you use 5 second fix, you can adjust with the backlight on and cure it after. I tend do do full strip replacement on these models with new strips since it is difficult to remove the old strips without popping off the lenses. Ran across an ebay listing for used strips with every lens popped off.
    Last edited by neilc6; 11-13-2019, 04:53 AM.

    Comment

    • sickboy
      Senior Member
      • Jun 2015
      • 86
      • UK

      #3
      Re: LG 6V LED Backlights

      Thanks Neil, but if you're working on one strip with all lenses removed (or fallen off), these replacement LEDs are noticeably brighter before fixing any of the lenses into place. They're easily twice as bright as the surrounding original ones.

      Comment

      • neilc6
        Badcaps Legend
        • Nov 2015
        • 1550
        • Canada

        #4
        Re: LG 6V LED Backlights

        I recall only the 32 inch models being 6V. Larger sizes may only be 3V. I will need to check later with some strips I may still have. You may be using the wrong replacement LEDs.

        Comment

        • sickboy
          Senior Member
          • Jun 2015
          • 86
          • UK

          #5
          Re: LG 6V LED Backlights

          No these are definitely 6v Neil. If I divide the drive voltage by number of LEDS it comes out at 5 point something. I've done dozens of the 3v ones as well and the strips, leds and lenses are easy to differentiate between.

          Comment

          Related Topics

          Collapse

          • tmhobadcap
            LG 55UJ6200 TV with bright spots
            by tmhobadcap
            There are a few bright spots on the screen. I checked on youtube and most probably they are caused by the led lens fell off and can be fix by gluing back the lens.
            But one of the bright spots is actually a bright ring (circled in red as shown on the attached photo). That means a bright spot with a dark center. What is the cause of that bright ring and how to fix it?...
            03-06-2021, 08:54 PM
          • Pipolups
            Corsair K70 LUX RGB dying LEDs
            by Pipolups
            Hi there !

            I'm having an issue for several weeks with my quite old K70 LUX RGB keyboard. I haven't used it for few months, and once I setup up again my desktop computer, I got several dead LEDs on that keyboard. I tried the Corsair troubleshooting thing (disabling options in iCUE, ...) but nothing changed so I conclude that for some reason some LEDs went in retirement...😅
            Decision taken to change these LEDs as I have access to desoldering iron and binocular magnifier, I wrote a ticket to tech support, hopping to obtain the LEDs reference and... They refused to tell me 🙄...
            10-08-2024, 11:58 AM
          • howardc64
            A1312 (27” iMac 2009-2011) A1407 (Thunderbolt Display) A1316 (Cinema Display) Display Black Screen Repair
            by howardc64
            Problem

            This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached....
            08-04-2024, 10:36 PM
          • ScHAmPi
            Samsung UE48JU7000 screen issue after backlight replacement
            by ScHAmPi
            Hi all,

            Because of two bright spots and a couple of dark spots I decided to replace the backlights in my Samsung UE48JU7000. See attached photos:


            I thought all went well, but after full assembly and testing it out it turns out not all is fine. The backlights are completely fine but I have some weird issues on the right half of the screen. Since I didn't really touch the T-CON board (apart from taking out the ribbons of the display and reconnecting them on assembly) it would be weird that the issue is with the T-CON board... But based on the behavior of the service...
            07-15-2024, 05:41 AM
          • Javiercity
            [B][/B]Sharp 80" lc-80le661u dark spots/shadows
            by Javiercity
            Hello there i have a Sharp 80" LDC that has some dark spots in the middle of the screen, since its a 80 inch need another person so hang it on the wall or move it around, so i hope the collective wisdom can help me to determine what is wrong, I've been doing some research online and there is next to nothing about this TV, i tend to believe that the spots are due the back films/diffuser sheets, that are bit dirty, or perhaps one or two LEDs being burned, but what throws me off is that the dark spots are more noticeable when the image is bit dark like night scenes, and also noticeable when...
            06-13-2023, 12:02 PM
          • Loading...
          • No more items.
          Working...