Announcement

Collapse
No announcement yet.

LG 32GK650F-B random flicker

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    LG 32GK650F-B random flicker

    I have this monitor that roughly every few minutes, the image would turn solid black for a frame or 2. It is infrequent but annoying and I'd like to stop it somehow. I have tried: swapping power supplies, different video cable, all 3 video inputs on the monitor, and 3 different computers. Since the symptoms doesn't change, the issue is likely with the monitor;

    Monitor has EAX69731901 board with video and power input, menu control joystick, LCD output and backlight output: https://i.imgur.com/OkrBoi1.jpeg

    I couldn't find any info on repairing this monitor and the only hit I have when searching for EAX board is a seller on Taobao and unanswered posts on Reddit.

    The board shows no sign of damage but what are the chance it's bad caps? There are 3 total plus 2 empty spots. And if the replacement caps does not fix the issue, what else could I do? I do not fancy reballing or swapping the main chip as I don't have the tool to remove, reball, or solder on any BGA chips. I have looked on eBay for 32GK650F and there are replacement boards but they are different, possibly used for older revision? Bigger too, odds are it won't fit unless I modify the metal housing and redo the screw posts. The cheapest whole monitor starts at $100 shipped (broken LCD) and $200+ (working.)

    #2
    Update: I removed 3 caps. C338 near LCD connector stank like a dead fish so I guess it was a defective cap about to pop. That one cap seems to be responsible for power filtering for LCD panel and might explain the flickering display.

    Already ordered new ones, probably a week.

    Comment


      #3
      Final update: new caps installed, monitor has been running 24 hours with no flickering at all.

      When I was looking around for info, I came across a few things. One: 32GK650 monitor seems to use 2 different boards. The older ones used EAX67626001 which is bigger but all the external ports are in the same place. It might not fit the metal house if it came with newer EAX69731901 board. Second: I noticed on the metal housing the stamped mark read 32GK850 which is I think similar except for RGB light on the back and G-Sync instead of FreeSync

      Comment

      Working...
      X