LG 50PC3D Screen Problem "Pictures Included"

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Treydogg77
    Treydogg77
    • Mar 2013
    • 99
    • US
    #1

    LG 50PC3D Screen Problem "Pictures Included"

    I've got a LG50PC3D that would not power up due to the caps on the power supply. I recapped the power supply, the TV turns on and stays on but the screen flashes white/gray repetitively, sometimes you can see vertical bars. "please see attachments"

    Any help and advice is greatly appreciated!
    Attached Files
    Last edited by Treydogg77; 10-21-2015, 12:01 PM.
    Tags: None
    • freakaftr8
      Badcaps Legend
      • Oct 2012
      • 3743
      • USA
      #2
      Re: LG 50PC3D Screen Problem "Pictures Included"

      Do you hear any ticking noises coming off the y or Z sustain boards associated with the flickering? Looks like a blown IPM module or a shorted mosfet on the upper or lower buffer board.

      Feel all four heat syncs on the y and Z. There are two on each. One of them cold still?
      Did I leave the soldering iron on?

        Comment

        • ReeceyBurger123
          Never Give Up !
          • May 2014
          • 7325
          • Britain
          #3
          Re: LG 50PC3D Screen Problem "Pictures Included"

          Looks to me like a Zsus issue as the pixels are slightly lit but arnt being discharged properly. Checked fuses on Ysus and Zsus ?
          Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

          https://www.facebook.com/Telford-Tel...7894576335359/

            Comment

            • Treydogg77
              Treydogg77
              • Mar 2013
              • 99
              • US
              #4
              Re: LG 50PC3D Screen Problem "Pictures Included"

              I appologize for the delay in the reply. I will check the heatsinks and see if they all are warming up when is get home tonite! Thanks guys!

                Comment

                • Sevenqi
                  Badcaps Veteran
                  • Jul 2011
                  • 292
                  #5
                  Re: LG 50PC3D Screen Problem "Pictures Included"

                  I got the mosfets shorted in the upper buffer with the same symptom

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK
                      #6
                      Re: LG 50PC3D Screen Problem "Pictures Included"

                      Y-buffer FETs shorted IMHO
                      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                        Comment

                        • Treydogg77
                          Treydogg77
                          • Mar 2013
                          • 99
                          • US
                          #7
                          Re: LG 50PC3D Screen Problem "Pictures Included" Updated!

                          Okay so I replaced the Y-sus main, and found 3fets shorted on the lower buffer. Replaced those and hooked everything back up and now I have a color vertical bar that moves across the screen left to right. Any ideas to what's causing this now?
                          Attached Files

                            Comment

                            Previous template Next

                            Related Topics

                            Collapse
                            • mmccomputer
                              problem with replacing lcd screen
                              by mmccomputer
                              I have an HP model : 14-cf0011nf and I want to change its display screen (it has an original 14" full HD TN 30 pins panel) which works without problem but I want to put another screen with an IPS panel, the problem is that I tried several screens but there is no display except with the original screen, I never had this problem before I changed hundreds without problems but this PC is not 'accepted than its original screen
                              otherwise on the motherboard it displays edp and I don't know, do the panels I tried only work with the LVDS protocol?
                              If anyone has any information on the subject...
                              12-15-2024, 03:44 PM
                            • jimjoe123
                              LCD TV Green/Pink screen problem
                              by jimjoe123
                              I have a Dick Smith 37" LCD TV, Model GE6804. I am using it as PC extended monitor only.

                              Problem is while watching tv, I hear a semi loud click(like a electrical breaker tripping due to overload, just sound like it but no actual electrical overload), then screen is covered with green or pink. I can still see the original picture image but overlayed by green or pink. See attached images. Pink.jpg is what I see, and Normal.jpg is before green or pink screen, What I captured was pink screen, but about 80% of time it's green and 20% of time it's pink.

                              Then each time...
                              02-23-2020, 01:29 AM
                            • valvashon
                              LG 55UH6150- trouble powering up, then half lit screen (pictures!)
                              by valvashon
                              The 55" LG has been in the basement for a few months without being used. Turned it on yesterday, set came on as it should and showed a complete screen for about 5 seconds (was on a broadcast channel but no antenna was connected), then the screen went mostly dark with about 1/3 of the screen on the right lighting up with brighter lines in that lit part (sorry, no pictures of that). Power LED was cycling too, preventing the TV from fully powering up.
                              Pulled the back off, all boards looked OK. Pulled the LED connector, turned the set on to see if it would power up but I don't belive it...
                              11-24-2024, 12:08 PM
                            • Chrissygizmo
                              Sony KD-55XG9505 lines on screen problem
                              by Chrissygizmo
                              Hello again everyone,

                              This is my latest mission, to try getting this Sony tv back to normal working order…

                              I've only just got it today, when you power it up everything is as should be, in fact it works perfectly for a few minutes then the screen starts getting horizontal lines on & eventually the full screen goes back, I will upload photos of the problem & also some photos of the board etc. You might notice that I'm busy trying the tape method, I'm not sure exactly where the clock lines are so I'm just guessing & hoping for the best lol . I've already tried...
                              02-19-2025, 11:31 AM
                            • reformatt
                              Macbook Air M2 A2681 Kernel panics after screen replacement
                              by reformatt
                              Just had a customer bring in a M2 MBA A2681 that had had a screen replacement in April at another repairer. Since then, she has been getting intermittent kernel panics. It's an aftermarket screen, and of course it fails in diagnostics as the calibration hasn't been done. The error in the panic log is "No device added after powering on the rails".

                              It seems the original repairer has swapped the board and the screen to other MAC's, and said that it isn't a screen issue. From what I understand, by doing a quick search on Google, this is in fact a screen issue. The panic relates...
                              07-31-2025, 08:37 PM
                            • Loading...
                            • No more items.
                            Working...