Help with how to replace LED's

Collapse
X
Collapse
+ More Options
Posts
 
  • Time
  • Show
Clear All
new posts
  • AcGeorgiegirl
    Badcaps Veteran
    • Jun 2013
    • 202
    • USA

    #1

    Help with how to replace LED's

    I've gotten help with my TV's troubleshooting, her at BadCaps, and purchased a replacement for my TV's LED strings from a member's website. However, I've gotten no help in HOW to replace old with new, and am very nervous about opening up the panel without harming it. Just hoping someone can help me with a "how to" resource? My Tv model is: Vizio e470i-AO.
  • Ltank
    Badcaps Veteran
    • Jun 2013
    • 776
    • USA

    #2
    Re: Help with how to replace LED's

    I have done one panel. 1st you need a big area to lay the screen down flat and no to scratch it. Then take it apart. The back is lifted, leaving the screen. It is fragile. The layers, need to stay in order. Some screens come a part differently. The individual led are a pain to replace. Usually you don't have the correct Leds, they damage the strip when removing them. After my 1st one, I don't do it unless it's my TV and I am out of options.

    Comment

    • popeye
      Senior Member
      • May 2011
      • 155

      #3
      Re: Help with how to replace LED's

      My advise is to scrap the set you can replace the led strip with difficulty then you will find other leds go they can also be a fire hazard has I have seen bad burn ups due to these crap leds who ever replaces the led strip will be liable under law for any fire caused by their work do you have insurance that covers you for this type of liability.You have been warned

      Comment

      • Alastair E
        Chief Womble
        • Mar 2013
        • 1963
        • U.K.

        #4
        Re: Help with how to replace LED's

        Unless you've done a few panels--they are very prone to damage, the tab-strips and COF are mega delicate and often when reassembled you'll have lines down the screen due to the tab to glass connection failing.

        Seeing its an LED set--they WILL fail again--I wouldn't bother TBH. LED's in these (and nearly all LED Backlit sets) are very unreliable rubbish, as they are overrun, get hot and fail.

        Bad design.
        TELEFIX

        How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
        http://www.irf.com/technical-info/appnotes/an-1088.pdf
        PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

        Comment

        • AcGeorgiegirl
          Badcaps Veteran
          • Jun 2013
          • 202
          • USA

          #5
          Re: Help with how to replace LED's

          I am a bit perturbed that I bought this LED string set without knowing how difficult installing them would be! But, alas, I have to give it a try. It's my only TV. I assume I may need to start a new thread, but thought I'd ask....how "possible" is the possibility of using the "smart" parts of this tv on another tv? ...ie are the boards of smart tv's so different that they won't "go" with another tv's panel and t-con(video output)? I ask because I consistently get calls from my local recycle facility to come pick up tv's I might can fix.

          Comment

          • Jimmy60
            Member
            • Jul 2014
            • 17
            • USA

            #6
            Re: Help with how to replace LED's

            Hello All;
            I just replaced the full set of led strips in one of these being very careful with the screen disassembly and reassembly. I was not able to verify anything on this set except that voltage was being supplied to the backlights and they were not coming on. Feeling confident that this would be the only problem I proceeded with the replacement of the LEDs. Gonna attach a pic of what I have now and ask you what you think?
            Attached Files

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA

              #7
              Re: Help with how to replace LED's

              Looks like tab bonding is damaged.
              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

              • johns1mj
                Badcaps Veteran
                • May 2015
                • 242
                • United States

                #8
                Re: Help with how to replace LED's

                I have done several. They are not as bad as everybody is saying. If one led is dying others probably are close.
                Yes, they are prone to failure.
                Yes, you have to be careful not to break anything.
                Yes, you need a large work area to lay things out in.
                Take your time. Use a table cloth/blanket for your work area to prevent scratches. There are many screws to remove. Keep them in order. Work slowly and thoughtfully.

                Comment

                • zomi
                  Badcaps Veteran
                  • Nov 2011
                  • 505

                  #9
                  Re: Help with how to replace LED's

                  Tape the tabs over so they are not dangling about
                  Get sound handling gloves makes it much easier when handlng the lcd
                  You will get the odd lcd that fails
                  but if your careful will be a rarity than a common occurance

                  Comment

                  Related Topics

                  Collapse

                  • unimatrix93
                    Which resistor should I remove/replace to decrease current to backlight leds?
                    by unimatrix93
                    Dear community, I want to increase the lifespan of my backlight led in my TV by decreasing the current.

                    However I need some help identifying the resistor I need to replace to achieve this.

                    Thank you!


                    ​...
                    11-29-2024, 05:05 AM
                  • 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
                  • tmhobadcap
                    Samsung un65h6203af led replacement question
                    by tmhobadcap
                    This tv is with sound but no picture. When light shines on the screen, we can see the image. This is a typical backlight problem. I opened it and found quite a lot of the leds are damaged. But the damaged ones are all shorted. No one is open. Is there a special reason? (From my past experience, both can be happened)

                    When I supply 3V to each of the good leds, the currents range from 105mA to 154mA. From these figures, I think the leds are 3V and about 0.5W. I plan to replace all the damaged leds only (because the price of the led strips is very expensive), but I could not find 3V 0.5W...
                    10-03-2023, 11:37 PM
                  • THE GTC
                    Insignia NS-37D20SNA14 intermittent LEDs
                    by THE GTC
                    So I use this TV daily as a second monitor for my PC or my Playstation - at one point a few months back I tried to fix the problem - but in the process, I figured out something that works so I haven't posted this for awhile. It is an annoying trick to have to do though, so I decided to post about it to see if anyone could spot what's wrong. It baffles me because it works on it's own half the time.

                    When I first got this TV, I was told it wouldn't turn on, and of course I did the flashlight test, and the image was there. Also, the red LED on the front indicated that it had power (it...
                    11-03-2020, 02:40 AM
                  • lmcancu
                    RCA RLDED 4331B: 43 inch LED TV: Backlight issue
                    by lmcancu
                    Hi I am having an issue with the LED backlight of this TV. I can see the picture with a flash light, so I determined it was a backlight issue.

                    Initially, after opening it I found 2 shorted and 1 open LED on 2 strips (total of 4). I removed the LEDs and shorted the pads together to verify if the backlight would work.

                    Testing it, I found the backlight turned on and I measured 54V when TV was in standby (off), and 100v when TV was turned on. The 4 strips each contain 9 LEDs, so 36 in all minus 3.

                    Instead of putting it back together I decided to replace...
                    04-01-2023, 01:11 PM
                  • Loading...
                  • No more items.
                  Working...