LG 50PS3000 only displaying bottom half of screen

Collapse
X
 
  • Time
  • Show
Clear All
new posts

  • Scottie7275
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Thanks Alastair for the quick reply. I have reseated the tabs but still no joy.

    Leave a comment:


  • Alastair E
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Reseat the buffer-tabs from screen to buffer-boards in line with the defect--they are quite a fiddle to do--And delicate....
    --They dont click in when fully home--they sorta 'nunk' in--You'll know what I mean once you've done one right...
    Last edited by Alastair E; 02-02-2016, 03:34 AM.

    Leave a comment:


  • Scottie7275
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Hello again!

    So i decided to get a new Y-sus board and fitted it this morning.

    It has worked but I now have a single black horizontal line right in the middle of the screen!

    Any ideas?

    Thanks

    Leave a comment:


  • ReeceyBurger123
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Fair enough just dont get an Led Tv ! Avido Led/Lcd and go Oled buddy you wont regret it. If not give it ago, you can send the boards back on ebay anyway.

    Leave a comment:


  • Scottie7275
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Hi Reece,

    Wife said if I was going to spend more money then she would have a 3D TV instead!!

    I feel a bit out of my depth to be honest and didn't want to throw more money at it to get nowhere. I thought about buying a Y-sus board just out of curiosity but wife said to just get a new tv! Might do that anyway after just reading the last post!

    I really appreciate everyone's help!

    Leave a comment:


  • Alastair E
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Ive had that fault--Replacement y-sus fixed it....

    I think it as one of the octal-buffers on the y that had gone...

    Leave a comment:


  • ReeceyBurger123
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Hey seen your selling this Tv on ebay, why have you given up ?

    Leave a comment:


  • ReeceyBurger123
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Originally posted by finntricky
    its the white block that has AUTO GEN under it, in the bottom left of the t-con, as in your picture, but cant remember the 2 pins to short,
    That's what I was referring too.

    Leave a comment:


  • vinceroger69
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    this thread does seem too have the top lines like your set has
    https://www.badcaps.net/forum/showthread.php?t=41599

    Leave a comment:


  • finntricky
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Originally posted by ReeceyBurger123
    Remove Lvds cable, on cntrl board there are a few pins that stick up jumper/short them out thwn turn Tv on. Screen will flash Red,white, blue etc.
    its the white block that has AUTO GEN under it, in the bottom left of the t-con, as in your picture, but cant remember the 2 pins to short,

    Leave a comment:


  • ReeceyBurger123
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Remove Lvds cable, on cntrl board there are a few pins that stick up jumper/short them out thwn turn Tv on. Screen will flash Red,white, blue etc.

    Leave a comment:


  • Scottie7275
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Where do I get a test jig?

    Starting to think it might be easier to buy a new tv?

    Leave a comment:


  • vinceroger69
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Originally posted by ReeceyBurger123
    Run the test patterns like Tom said.
    Reading this post i think it needs a test jig for these? tom has posted in the below thread,
    https://www.badcaps.net/forum/showthread.php?t=34550

    Leave a comment:


  • ReeceyBurger123
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Run the test patterns like Tom said.

    Leave a comment:


  • Scottie7275
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    And this is the pic of the screen with the new buffer board in.
    Attached Files

    Leave a comment:


  • Scottie7275
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Ok so I checked the connections and all seem OK. I did notice however that the lines on the screen are far less with the replacement buffer board than the original one. I don't know if that means anything or not? I have included pics as well as a pic of the control board.
    Attached Files

    Leave a comment:


  • Scottie7275
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    I will do that tomorrow Tom, it's bedtime now!!!

    Thanks for your help so far!

    Leave a comment:


  • tom66
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Interesting...
    Can you post a picture of your control board?
    It's the green board in the centre of the set - has a load of white ribbon cables coming out of it.
    Also, check that you connected the cable between the two buffers correctly. If that's loose weird shit can happen.

    Leave a comment:


  • Scottie7275
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Hi Tom.

    Thanks for your reply.

    Attached is a picture of what should be a completely black screen.

    I haven't done the test screen thing as I have no idea how!

    Thanks

    Scott
    Attached Files

    Leave a comment:


  • tom66
    replied
    Re: LG 50PS3000 only displaying bottom half of screen

    Most likely it would be something wrong with the signals going to the top buffer since you have ruled out the buffer itself, that would point to control board or possibly main board. It is also possible a damaged or loose cable could cause this so it is worth checking those. (The cables can corrode if the air is humid, or come loose if the TV is moved or over time due to thermal expansion.)

    Can you see if the white lines go away on a completely black screen?

    Have you tried activating the test pattern mode? (It requires putting a small jumper wire across some pins on a board.)
    Last edited by tom66; 01-25-2016, 03:01 PM.

    Leave a comment:

Related Topics

Collapse

  • armoured_smiler
    Panasonic Tx-40cx400b top left half screen not displaying correct
    by armoured_smiler
    Hi,

    Trying to work out if this is TFT problem or TCon issue.
    The TV powers up but the top half of the screen, from the right it is OK, but as you look across to the left halfway across it starts get duller and duller until it is very dark on the lefthand side, currently I trying to clean the remote as it seems to have something film wise on the pads stopping it from registering buttons pressed.

    Also when changing the screen size of Windows PC display to say to a smaller pixel sizewindow, the original window displayin the top left stays/takes a few seconds to disappear?...
    04-08-2024, 03:40 PM
  • Chrissygizmo
    Samsung UE55JU6800K half screen dark
    by Chrissygizmo
    Hello everyone, I’ve just been given a Samsung UE55JU6800K smart tv as it had white spots on the screen due to the led lenses falling off. After refitting them & putting the tv back together I thought it was a nice easy fix for a free bedroom tv , then I tried it before screwing the back into place. I realised that the right side of the screen was darker than the other side, I removed the screen again as I thought the backlights had failed but they are fine.
    I put the screen back in place & turned it back on . The screen seemed to be ok again but different screens on the same...
    02-10-2025, 12:33 AM
  • Ryan.man
    Macbook 2017 with touchbar (A1706) won't turn on after removing the screen
    by Ryan.man
    Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!

    My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.

    This time the original cable broke too close to the screen, it can't be fixed without tearing the screen...
    02-04-2025, 12:23 PM
  • Raulnn
    TD Systems K50DLG12US half black and half white screen
    by Raulnn
    good night! I have this screen that looks half black and half white. the tcon gives a low vgh value (5-6v). the rest seem fine. I first removed the flex from one half of the panel and then the other. Removing the left, vgh increases it to 25-26v. I think the problem is in that area, but there are not many elements on the integrated controller board. there are no shorted capacitors. could they be a cof? Some help?

    By the way, now the entire screen is black. Maybe some flex was not connected correctly... I have exchanged the flex and there are no variations, I don't think they are the...
    01-20-2024, 04:49 PM
  • scubacamper
    Sharp Aquos LC-70C6400U Half Screen Dark
    by scubacamper
    I found another post on this site the other day which has been very helpful in troubleshooting this issue I am having with my tv. The left half of the screen is dark, and the other half is VERY slow to generate it's image - and it only generates part of its image at that.
    Based on this yt video, I have narrowed it down to an issue (short?) on the left side of the display, somewhere in the system of ribbon cables.
    when I remove the bezel and the rear cover, I can get the image to display correctly by manipulating the ribbon cables on the left side which connects the left lower display...
    05-03-2025, 12:19 PM
  • Loading...
  • No more items.
Working...