B140XW01 V.0 Bad Tcon (White Screen)

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • lazaro.089
    Senior Member
    • Jun 2014
    • 79
    • Mexico

    #1

    B140XW01 V.0 Bad Tcon (White Screen)

    Hi, I have this LCD Panel. I know it's a cheap panel that I can easily replace but I'm trying to repair it.

    Is giving a white screen. I already checked with the oscilloscope that I have EDID Data and CLK. But besides that, I'm clueless. Don't know what to measure.

    Backlight works all right, and VDD is 3.3v stable.
    Attached Files
  • SMDFlea
    Super Moderator
    • Jan 2018
    • 20643
    • UK

    #2
    Re: B140XW01 V.0 Bad Tcon (White Screen)

    Is this for a laptop,if so what model .
    All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

    Comment

    • lazaro.089
      Senior Member
      • Jun 2014
      • 79
      • Mexico

      #3
      Re: B140XW01 V.0 Bad Tcon (White Screen)

      I have just the panel, I savaged it from an acer laptop (I have only the top part of the laptop)

      Comment

      • SMDFlea
        Super Moderator
        • Jan 2018
        • 20643
        • UK

        #4
        Re: B140XW01 V.0 Bad Tcon (White Screen)

        You can flash the EDID,it could be corrupt,but how are you going to test for an image on the screen unless you hook it up to the laptop ? or a controller board like this - https://www.ebay.com/itm/DVI-VGA-Aud...-/172319454906
        All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

        Comment

        Related Topics

        Collapse

        • Daren87
          Sony 8K XBR-75Z8H White Screen Vertical Bars Tcon Code. Help Needed🙏
          by Daren87
          Hello everyone,

          I've recently been given a Sony 8k Z8H. It's got a white screen with two vertical black bars. At times it's given me the 5 blink Tcon code. Testing voltage on the Tcon I can see some low or missing voltage. I've done a basic visual check of cables and the COF. Not seeing anything obvious. The original Tcon seemed to have good caps until turning it over. On the bottom I found maybe 10 caps with both sides of the caps shorting to ground. I thought ok these caps and likely other components on the Tcon are shorted so let's try a replacement Tcon. I just received the...
          08-13-2023, 03:25 PM
        • harp
          White screen repairs
          by harp
          To ask here... I have few devices with white screen problem, actualy nokia 2220 and some fuji? camera, and try to understand what is common problem to cause that issue.
          Yes, both devices work everything else probably ok, I mean, I hear intro melody and keypress click sound, DTMF tone, power on off... all ok.
          On desk is nokia 2220 slide, and I check all screen connectors and components arround it, measure voltage drop, but all looks ok. I suspect on slide flex cable, but it look ok and white screen is not interupt while flexing board, pushing conectors, and sliding up down. In attachment...
          05-13-2024, 03:43 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
        • x_orange90_x
          TCL 50S535 bad tcon or panel issue?
          by x_orange90_x
          Just bought this for 10 bucks yesterday hoping to fix it. The guy said water dropped inside from a dehumidifier hose and it started showing black and white vertical bars then went blank. When I got it home and turned it on it came on fine and displayed correctly but I was noticing faint vertical bars in the image. After a little bit I turned it off and back on and it was a black screen again. I opened it up to check for water damage and corrosion but didn't find anything of the sort. I cleaned the ribbons anyway and reconnected them but still got a blank screen. If I disconnect the right side...
          03-29-2025, 11:02 PM
        • alltvrepairs
          Lg TCon test pins for screen test
          by alltvrepairs
          Hi,
          i have a 65 Panasonic TX-65HX710E using vestel 17MB170 main and Lg tcon.

          Few drops of water fell probably near COF and have no display. Tried removing tabs but no.part of display present as if tcon fuse open. However 12v is present and tcon can be felt warm enough that supplies are present. Backlight and sound ok.

          Anyone knows if this TCon 6870c-0805A has any special test pins for rgb test?

          Appreciate your help....
          06-13-2025, 06:33 AM
        • Loading...
        • No more items.
        Working...