Can I test video output on different tcon/panel?

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • JonathanAnon
    Badcaps Veteran
    • Jul 2012
    • 457
    • Ireland
    #1

    Can I test video output on different tcon/panel?

    Hi guys,

    I've come across the same situation a few times.. Where the TV powers up but the display is not right.. PSU is good, and I need to work out if the signal from the main board is bad or if the issue lies further down the line in the tcon / drivers / panel. Would it be possible to plug the LVDS cable in to another panel of similar size? Or are all the LVDS outputs wired differently?

    For example, I currently have a Philips Flat 14inch Flat TV. I have a 17 inch monitor screen that accepts the same LVDS cable. If I was throwing caution out the window and just plugged it in to this screen what is likely to happen?

    (I know we're normally meant to post exact model/makes etc but I'm looking for general troubleshooting tips, not a solution for this particular problem)

    thanks,
    Tags: None
    • JonathanAnon
      Badcaps Veteran
      • Jul 2012
      • 457
      • Ireland
      #2
      Re: Can I test video output on different tcon/panel?

      Just an additional note: I am talking about video only. The idea would to be to illuminate the screen with a torch to see the on screen image, not to connect to the TV's lighting source.

        Comment

        Previous template Next

        Related Topics

        Collapse
        • 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....
          2 Photos
          06-13-2025, 06:33 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
        • netgearnetgear
          TCL 43S423 TCON OR PANEL FAULTY???
          by netgearnetgear
          Good day, I have a TCL TV: Model 43s423. After turning ON the TV, the ROKU TV logo appears with fine lines over the whole screen, then after a while there are vertical bands in the middle of the screen top to bottom and the TV tries to update its firmware but I do not have the remote to connect it to my new network connection. Also the Power ON light blinks 2 times in quick succession. When I remove the ribbon on the right of the tcon board the left side of the screen shows but with fine lines. If I remove the left side ribbon and connect the right side ribbon the whole screen is blank with...
          08-20-2025, 06:04 PM
        • stylishconsultant
          un60j620dafxza - Samsung No Display Problem
          by stylishconsultant
          Hi All,

          Need help.

          I have a samsung un60j620dafxza led tv. When I plug it in it has no display, no sounds, and no standby lights.

          So I opened the tv and disconnected the power to the mainboard and the backlight powered up. This according to many people says that this is a mainboard
          problem. I checked the voltage coming from the stb and I read 1.3 volts on pins 1,3,5 and 7 which are low volts instead of 13 volts which i think the lcd panel
          might be drawing too much power from the power supply that it prevents the right voltage going to the mainboard....
          09-04-2024, 03:26 AM
        • iglitare
          Sony KD-75XF9005 grey Picture but Sound. TCON or panel?
          by iglitare
          Hi,

          i want to repair a Sony KD-75XF9005 TV that initially only showed a grey picture.
          Backlight seems to work, Sound (Setup menu after reset) works.
          If i dissconnect the left FFC cable from TCON to panel i have half a screen on the right. If left cable is connected always only the grey screen.
          Interchanged the cables, its always only the right side that is working. Always grey if left side is connected.
          With my small knowledge i would think at least the cables are good.

          Can this happen because of a bad tcon board?
          Or is it always a bad/shorted...
          09-04-2025, 07:13 AM
        • Loading...
        • No more items.
        Working...