LG 55LE5900 - flickering issue

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • parth2480
    New Member
    • Nov 2016
    • 2
    • United Kingdom
    #1

    LG 55LE5900 - flickering issue

    Hi there,

    I'm a new non-tech guy here and I'm having a problem with my LG 55inch TV model number 55LE5900. The TV turns on fine then when it shows the 'No Signal' message that specific region is distorted horizontally a lot and a bit vertically as well. On top of this NONE of the inputs seem to be working -hdmi, component, scart etc...

    Background:
    My TV started making a loud noise every time it turned on and I opened it up and found that the speakers would just make the noise so I decided to remove them and then when I turned the TV back on the flickering started.
    I have checked all the caps and there are no bloated/blown caps. I have tried removing, adjusting and cleaning the ribbon but it does not work. On top of this all my inputs have stopped working - no hdmi port/component input works. I have tried removing all the wires connecting the seperate boards and none of them seem to be causing the issues.

    I'm pretty sure the logic board(is that what its called?) is the fault and not the t-con or power board but all suggestions greatly appreciated.
    Tags: None
    • dick_barton
      Badcaps Legend
      • Aug 2015
      • 6643
      • Wales
      #2
      Re: LG 55LE5900 - flickering issue

      What's the situation if you put the speakers back in and turn the speakers off in the menu.
      Willing to help but I'm no expert.

        Comment

        • tvtimmy
          Badcaps Legend
          • Mar 2015
          • 1160
          • usa
          #3
          Re: LG 55LE5900 - flickering issue

          Put the speakers back in and pull the mainboard out and re-flow the bga solder joints under the chip with the big heatsink on it. You will have to remove the heatsink first.

            Comment

            Previous template Next

            Related Topics

            Collapse
            • phyclopse
              Acer SA230 Flickering Issue
              by phyclopse
              I got this flickering issue as in this video

              https://drive.google.com/file/d/1MHr...hcpjotoN_/view

              The monitor keeps flickering for like 5 seconds and it gets solved after 5 seconds. First I thought it is the power/display board so I purchased one from eBay but the issue persisted.

              Checking the board where cables are connected I found out the SM4047 IC is getting hot.

              The image of the board is attached. Is there anything else I should check before I order the IC?...
              07-23-2022, 01:16 PM
            • Indie
              Samsung TV LA46B550K1R flickering issue, so near yet so far
              by Indie
              Hi,

              I have a samsung tv (2009, works well) apart from an imminent flickering issue for some time.

              Model: LA46B550K1R
              Model code : LA46B550K1RLXL
              Ac:100-260 V 50-60Hz, 240W
              Power supply circuit: BN44-00265B

              I read through the forums and found other Samsung models both 46, 55 inches , old and new with similar issues. Two things stood out:
              1. eco setting in tv was recommended to be switched off
              2. Jumper number JP852 was recommended to be cut off.

              Now before opening the tv i tried playing around with the...
              09-24-2020, 01:44 AM
            • reessi
              ACER BM320 Monitor - Horizonal Flickering Lines After a While
              by reessi
              Hello,

              The monitor started off showing flickering thin (1 pixel) lines horizontally every say 3mm..

              They are black on the right and gradually fade to nothing on the far left.
              They start either after 5 mins or up to 2 hours after so annoying for testing.
              They flicker continuously very fast! With a slight pause milli-second every second.

              Initially I cleaned the LVDS cable and connected to the T-Con and then it worked fine for 3 weeks but not sure if this was just co-incidence.

              I tested each half by removing the first the left flex from...
              06-03-2025, 09:58 AM
            • rounin
              MacBook Air A2337 (820-02016) USB-C Port Issue – Only Works in One Orientation (CC Line Problem?)
              by rounin
              Hi everyone,

              I'm working on a MacBook Air 2020 (A2337, board 820-02016) and running into a strange USB-C issue. I've gone through quite a bit of testing and part replacement, but I'm stuck — hoping someone here can shed some light.

              🛠 Original Issue
              The machine initially wouldn't negotiate 20V over USB-C — stuck at 5V.
              Diagnosis showed PP1V5_UPC0_LDO_CORE shorted to ground.

              I replaced U3100 (UF400) using a donor board (A2179), and the machine powers on fine now.

              ⚠️ New Problem: One USB-C Port Only Works in One Orientation...
              04-19-2025, 01:18 AM
            • ugamazing
              Three 820-01700 32GB Logic Boards Same Issue: Won't Wake From Hibernate
              by ugamazing
              I have three identical-spec 820-01700 boards (2.6/32/512), and ALL THREE boards came to us with the same fault, from different sources: The boards don't wake from hibernation with the keyboard or lid, they ONLY wake when you press the power button. I understand this is a very minor issue, but the boards must be fixed!

              We will of course begin with the obvious (checking lid signals), but I couldn't help but notice these three boards were all 32GB variants. Has anyone noticed an issue relating to these 32GB boards in particular? I of course don't think it's a RAM issue, but it's bizarre...
              12-17-2024, 07:05 PM
            • Loading...
            • No more items.
            Working...