TV Noblex DK50x7500. T-con o Panel?

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • L.L.
    Member
    • Jun 2023
    • 16
    • Argentina

    #1

    TV Noblex DK50x7500. T-con o Panel?

    Hello, I have a Noblex DK50X7500 TV with a T-con AUO 55T45 C02 and an AUO 50T39 panel. The standby LED lights up, and when I press the power button, it blinks once and doesn't work (no picture, no backlight).

    When I unplug the flex panel, only side A shows a good picture on half the screen.

    When I unplug it, only side B shows a good picture on half the screen.

    VHG = 27V
    VGL = -9V
    HC1 to HC8 signals = 2.9V

    Where could the problem be? Thanks!​

Related Topics

Collapse

  • 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
  • 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
  • maneatingmonkey
    Missing LCD Panel Voltages VGH, VGL, VCOM (TCL 55P6US Sound & Backlight but NO Picture)
    by maneatingmonkey
    I have a TCL 55P6US with sound and backlight but no picture. This model does not have a T-CON board, and the right (rear perspective) panel board is fed from the left panel board. I have not been able to induce any change by disconnecting the secondary panel board or the tape cut-off method on the primary board.

    There are a bunch of voltages missing on the panel boards. I can't find any shorted caps of the panel boards, and all of the missing voltage rails read in the kiloohms, which leads me to suspect the issue may lie on the circuit board, rather than a short in the panel.
    ...
    03-27-2024, 07:17 AM
  • mmartell
    General Questions on the Relationship Between Mainboard, TCON and Panel
    by mmartell
    My goal here is to be able to use boards on hand to swap into faulty sets when the faulty board is not obvious.

    I will start by asking what is the format of the output from the mainboard and is it generic in any way or does it vary by manufacturer and/or model ?

    And as far as I know a tcon and panel must be a matching pair because the timing of the signals and the voltages required to drive the panel are specific to the panel itself. (That may be a blanket statement that isn't true in some cases where the panel creates its own sub-voltages on its panel boards?)...
    01-06-2024, 01:32 PM
  • 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
  • Loading...
  • No more items.
Working...