Panasonic TX49DX650B no picture

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • CoolJc
    Member
    • Feb 2022
    • 18
    • uk

    #1

    Panasonic TX49DX650B no picture

    Panasonic TX49DX650B - intermittent have sound & backlights but no picture, got LT feed to T-con fuse, tried a T-con board from Ebay but got permanent no picture with that so it got sent back,
    Guessing it must be a T-con or Main board problem - anyone experienced (and cured) the same fault?
  • CoolJc
    Member
    • Feb 2022
    • 18
    • uk

    #2
    Re: Panasonic TX49DX650B no picture

    Further info re intermittent no pic,

    If i disconnect the right ribbon connector, the right side of the screen goes white, If i disconnect the left, the left side goes white
    When both ribbons are connected the screen is dark but strangely there is a 'glow' across the bottom edge stretching up a few inches

    Q - if there was a minor error with the led strips could the main board sense a problem and blank off the video info?
    Reminder - When not blanked off, the picture is great

    Tis a strange one

    Comment

    Related Topics

    Collapse

    • Fly_Among_Stars
      VIZIO E70-E3 Half picture with half TCON
      by Fly_Among_Stars
      Hi,
      I have a VIZIO E70-E3.
      Symptoms: Black screen, no picture, but LED backlights are working.
      I probed the power board and voltages are as listed on the board.
      Main board appears fine, too.
      I believe the problem is either a bad T-CON board, or connection to LCD, or bad LCD.
      There are two separate ribbon cables feeding the LCD.
      If both are connected, the screen is black.

      If only the ribbon cable that feeds the right side of the screen (when viewed from the front) is disconnected, the left side of the screen shows picture and...
      04-24-2023, 08:20 PM
    • FZG
      Panasonic AG-1000B VHS player with bad picture quality
      by FZG
      Hello!

      I recently got an old VHS player from Panasonic and just for fun I want to try to repair this device. It is an AG-1000B portable VHS player from 1990 and it has a problem with picture quality in playback mode.

      Picture in playback mode is very noisy and often loses sync but the still images are nearly perfect.

      I want to know, is this something that could be solved by recapping or is the video head likely gone?

      Also, what mechanism is this?

      Any feedback is appreciated!...
      05-06-2024, 07:16 AM
    • Bazfletch3
      Panasonic TH-65FX800A backlight LED's working but picture is very dark
      by Bazfletch3
      Hi all

      While I have quite a decent background in electrical & electronic troubleshooting & repairs, this is my first time stripping down an LCD TV for repair.... I have inherited a 3yr old Panasonic LCD which has a picture, but it is quite dark (too dark to be watchable - but still quite easy to see; I didnt need a torch to see it).

      I started by checking and trying to adjust all of the picture and backlighting levels, but that made little to no difference. I also did a factory reset.

      From there I envisaged that the backlighting wasn't working, however...
      01-08-2024, 10:18 PM
    • shelby5041
      Samsung LCD TV no picture backlight on no 12v at tcon
      by shelby5041
      hi
      i have a samsung lcd tv

      it powers on with sound and backlight but no picture

      all voltages from PS are good 12v 3.3v and 5v

      whats odd is that at the tcon i tested voltage across the fuse on the tcon and i get 0v

      i figured main board issue..so i ordered a used main board....when i put replacement main board in i still have same issue

      no 12v at the tcon fuse

      i disconnect the panel ribbon cables to rule out any panel issues and i still have no 12v at the tcon fuse

      the odds of having 2...
      10-08-2021, 08:21 AM
    • 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
    • Loading...
    • No more items.
    Working...