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    LCD TV Green/Pink screen problem

    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 I either press power button(under tv) or unplug from outlet then re-plug in. Then normal picture returns. At first I thought physical separation from outlet will do "hard reset" and better than pressing power button under tv, but both option gets me back normal picture.

    Now this problem been happening for over several months. (Before this I had the tv for over 10yrs and NEVER a single problem). At first few times a week, then daily then several times(sometimes over 10 times and other time under 10 times) a day. Then few time nothing for entire day. Sometimes happens ever few minutes for 5-10mins, the other times nothing happens for hours or even over 10-15 hrs. I would IF it was something overloaded or heated, then as soon as power is back on problem will surface again. Very inconsistent, this hard to troubleshoot.

    Like I said each time I turn off tv then on again, and 100% of time back to normal picture.
    So I am not sure if something is overloaded? overheated? which triggers green/pink screen. Then after I turn tv OFF/ON then back to normal like tv was reset, or during OFF something was reset.

    One interesting observation about green/pink screen. When I do a print screen, green/pink screen is not captured, It's normal picture, even though LCD screen is covered with green/pink. So somehow green/pink is not part of normal picture coming thru T-CON or main board(??). Green/pink is overlayed color on top of normal picture.

    More about "CLICK" sound...it's followed by constant hissing sound. But when I disconnect tv speakers (by taking off back cover), no "CLICK" sound or hissing sound. Screen just turns green or pink covered. So whatever is triggering my problem does not create it's own sound but effects tv sound thus I can only hear it when speakers are connected.

    I NEVER opened LCD back cover before till now. But fast learner. LOL.
    Took off back cover, Capacitors are all flat, none are bulged. Transformers look fine(tapped it) and nothing happened. I left back cover off and watched TV till green/pink screen happened, I can not hear any sound at all,
    Now I don;t have voltmeter, so I never measured any voltages.
    BUT could it be that voltage is dropping thus shuts off or effecting chip? capacitors? coils? creating green/pink then when I unplug or OFF power button, everything is "reset", then back to normal.

    What is most puzzling about my problem is it doesn't stay green/pink screen status, It always go back to normal after unplug/power OFF/ON. SO hard to isolate the problem.

    So I spoke with several LCD repair shops, few online LCD forums(I couldn't find many online), and YES I GOOGLE searched under just every wording that I can imagine and heard about. NOTHING. All seem to be a permanent problem, then after fixing picture back to normal. NONE "reset" like mine after unplug/power OFF/ON. In fact NOBODY NEVER heard of my problem, nothing even close.

    Another thing, I turned ON tv without PC connection. I couldn't duplicate green/pink but only when PC is connected. So somehow LCD signal is being effected.
    Again, green/pink colors are overlays NOT part of original picture. I seen some LCD problems where whole picture is effected by green or some color, so green is embedded into LCD picture. But my problem, green/pink is "Overlayed" on top of normal picture, as evidenced by screenshot (it do not show green/pink but only normal picture),

    It could be many things, power board, main board, T_CON, etc???

    So anybody go any ideas? I hope I gave plenty details. But ask away for more.

    BTW I tried replacing LVDS cable from main board to T-CON. Still green/pink.
    And YES, I unplugged and re-plugged in every connections

    Maybe this is how it is, and NEVER become a permanent problem such that I can not watch this TV again.
    OR I just keep OFF/ON power (then back to normal picture) and keep using my tv. "New Normal"? LOL

    Also I learned a LOT about LCD TV during this process.
    Attached Files
    Last edited by jimjoe123; 02-23-2020, 01:43 AM.

    #2
    Re: LCD TV Green/Pink screen problem

    In last 30 mins...screen turned green 3 times and pink twice. I wonder why different colors? Rarely (only few times out of hundreds) screen turned blue. Like I said mostly green, and pink little less

    Comment


      #3
      Re: LCD TV Green/Pink screen problem

      Maybe update the display driver on the pc, also verify the hdmi or whatever cable going from tv to pc is functioning properly.
      Last edited by nomoresonys; 02-23-2020, 07:46 AM.

      Comment


        #4
        Re: LCD TV Green/Pink screen problem

        How are you connecting the pc to the tv, hdmi,vga,dvi? is this in a dual monitor configuration? If it is, does the other monitor picture turn pink?
        When the tv is showing the problem, bring up the TV MENU, how does it look? I suspect you have either a bad cable between the tv and pc or your video card has an issue

        Comment


          #5
          Re: LCD TV Green/Pink screen problem

          Originally posted by nomoresonys View Post
          Maybe update the display driver on the pc, also verify the hdmi or whatever cable going from tv to pc is functioning properly.
          First, I connected PC to TV via VGA. and I have removed and reconnected VGA from PC and TV a zillion times, each time I made sure I pressed hard as possible so all pins are connected, In fact I tested VGA cables on other PCs, even bought (2) brand new VGA cables, and still green/pink problem. (BTW store was kind enough to refund VGA cus I told them what I was trying to do, Told me just bring it back if don't solve problem. What a nice people. Good business, I have gone back and bought other things)

          Second, update display driver? All the years using PC and recommendation of updating "drivers" I have yet to see "outdated" driver. So it seem a very generic, catch all, almost like "google it" type of comment. BTW driver is UP TO DATE.
          So can you explain more why update driver after reading my post? I was curious maybe you suspected something I haven't thought about.

          Comment


            #6
            Re: LCD TV Green/Pink screen problem

            Originally posted by R_J View Post
            How are you connecting the pc to the tv, hdmi,vga,dvi?
            VGA, you can see more my reply to nomoresonys above.

            Comment


              #7
              Re: LCD TV Green/Pink screen problem

              Originally posted by R_J View Post
              is this in a dual monitor configuration? If it is, does the other monitor picture turn pink?
              has an issue
              Maybe I didn't make it clear, when I said using TV as PC extended monitor, I thought it would be understood as I am using it as dual monitor configuration. PC main display is 19" monitor (not LCD tv) as display 1,, and LCD tv is extended external monitor, display 2.

              Interesting you ask "does the other monitor picture turn pink?" meaning 19" monitor. After I posted my topic, I got to thinking while watching a sports game(yes, sports is cure all for everything in life, LOL) that maybe problem is coming from PC cus overlay green/pink, not embedded in picture.

              So as of now I am testing something. I exchanged VGA from PC to tv, vice versa. Same green/pink so VGA cable is NOT the problem.

              Then I switched VGA connect to PC, meaning now TV is main monitor(Display 1), and 19" monitor is display 2.
              So far so good, no green/pink. Keep my fingers crossed.

              IF this solves green/pink problem then few observations.
              Whatever is causing green/pink does not effect same to 19" monitor as does to LCD tv. Perhaps LCd is more sensitive? who knows?
              And problem is coming from PC. display driver? defective video card? maybe uninstall NVIDIA then reinstall? etc....
              Stay tuned......

              Comment


                #8
                Re: LCD TV Green/Pink screen problem

                Originally posted by R_J View Post
                When the tv is showing the problem, bring up the TV MENU, how does it look?
                When green/pink happens, I tried buttons on side of tv (Select, menu, ch-/+, vol-/+, etc..) Nothing happens, it's locked out. TV remote do not work, so I can't test with remote.

                Somehow this green/pink issue is effecting TV operation.

                Perhaps green/pink issue has NOTHING to do LCD tv at all? maybe PC is the problem?

                Comment


                  #9
                  Re: LCD TV Green/Pink screen problem

                  get a cheap dvd player or otherwise and connect with hdmi and see if the problem exists. From there you can decide on whether it has something ONLY to do with VGA "adaptation" or some other interface issues. Further just saying "vga" does not necessarily provide the full details of what settings you have on the computer interface. Changing cables and having the same problems just rules out the cable but not the computer intereface / connector or tv connector.... "pressing hard" isn't really an "certification" that the connection is good.
                  Last edited by budwich; 02-23-2020, 05:49 PM.

                  Comment


                    #10
                    Re: LCD TV Green/Pink screen problem

                    Feel free to speculate, ask detailed questions and offer possible solutions or theories.
                    I been on LOTTA forums where posts are short and sweet. IMHO more detail the better then I know what you are thinking,and sometimes it triggers new ideas on my end.

                    Comment


                      #11
                      Re: LCD TV Green/Pink screen problem

                      Originally posted by budwich View Post
                      get a cheap dvd player or otherwise and connect with hdmi and see if the problem exists. From there you can decide on whether it has something ONLY to do with VGA "adaptation" or some other interface issues.
                      After few days with current set up (switched display 1 and display 2), I plan to test with HDMI, external source like DVD player,

                      Comment


                        #12
                        Re: LCD TV Green/Pink screen problem

                        Originally posted by budwich View Post
                        Further just saying "vga" does not necessarily provide the full details of what settings you have on the computer interface.
                        explain more? I do not understand your point?
                        On PC end, I got VGA as display 1 output, DVI as Display 2 output, I got DVI to VGA converter, so display 2 (LCD tv) is connected with VGA.
                        Does this answer your question?

                        Comment


                          #13
                          Re: LCD TV Green/Pink screen problem

                          Originally posted by budwich View Post
                          Changing cables and having the same problems just rules out the cable but the computer intereface / connector....
                          True, it's only common sense, I hope you give me more credit then to think like that. I am no expert but certainly not ignorant either. LOL, But I have read plenty forum post where I go "huh????"

                          Comment


                            #14
                            Re: LCD TV Green/Pink screen problem

                            Originally posted by budwich View Post
                            "pressing hard" isn't really an "certification" that the connection iis good.
                            True, again I was not thinking "pressing hard" did some magic. Since loose connection can cause obvious issues (amazingly many people ignore solid connection and thinking they got a big problem), I wanted to MAKE sure loose connection is not the cause of my issue.

                            Again, I hope you weren't thinking I was that ignorant to think "pressing hard" would somehow ensure "certification".

                            As simple as make sure connections are solidly made will solve many perceived issues, it's amazing how many people ignore that. Almost like not pressing power button ON on LCD tv while connected to outlet. Wondering why tv is not working?(true this happens) or PC monitor is blank or black thinking PC has a problem, only to findout that user did NOT turn on monitor button to ON position.
                            So yes, I did "pressing hard" VGA to make sure bad connection is not the issue.

                            Comment


                              #15
                              Re: LCD TV Green/Pink screen problem

                              I would open the tv and inspect the power supply and the main boards, you might see something obvious. What ever is happening must be with the tv and not the pc/cables as the tv was not responding to the remote or menu buttons.
                              Last edited by R_J; 02-23-2020, 06:00 PM.

                              Comment


                                #16
                                Re: LCD TV Green/Pink screen problem

                                Thanks for few replies...few questions
                                So you have seen or heard of same problem before? or are you guys just "speculating"?
                                As I said I spoke with many many LCD tv "repair" people, NONE even heard of my problem.

                                IF the problem is coming from PC(video card or whatever) then why turning tv OFF then ON bring normal picture back? why not same problem still exist when tv is ON again? like I said even side panel (select, menu ch-/+, etcc is locked out.

                                I am sure I not the only person in the world using LCD tv as PC external monitor, I assume it's very common. YET my problem seem to be so unique. hummmmm????

                                Comment


                                  #17
                                  Re: LCD TV Green/Pink screen problem

                                  Originally posted by R_J View Post
                                  I would open the tv and inspect the power supply and the main boards, you might see something obvious.
                                  so have you experienced same or similar problem yourself? or are you just guessing?

                                  Yes I DID open back cover and inspected very very carefully, even disconnecting all cables and reconnect, felt each capacitors for bulging or flat, transformers and coils to see any defects, tapped the same while green/pink was happening, no visible burnt, melted parts, etc....I even took it to three repair shops, they inspected and found NOTHING unusual. NOTHING they can do.

                                  Comment


                                    #18
                                    Re: LCD TV Green/Pink screen problem

                                    Originally posted by R_J View Post
                                    What ever is happening must be with the tv and not the pc/cables as the tv was not responding to the remote or menu buttons.
                                    hummm??? so it must be either tv or pc? that's why I posted my question.
                                    So you have any solutions?

                                    Comment


                                      #19
                                      Re: LCD TV Green/Pink screen problem

                                      .
                                      Last edited by R_J; 02-23-2020, 09:40 PM.

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