BenQ 2765HT vertical lines, no picture

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • hendue
    Member
    • Feb 2024
    • 28
    • Germany

    #1

    BenQ 2765HT vertical lines, no picture

    Hello everyone,

    I was trying to fix the monitor, which was giving me the following pictures:
    Click image for larger version  Name:	20250906_151913.jpg Views:	0 Size:	1.67 MB ID:	3721619 Click image for larger version  Name:	20250909_103800 1.jpg Views:	0 Size:	2.64 MB ID:	3721620
    It was somehow reactive, such that if I pressed the buttons, the lines changed in positions or if i moved e.g. a task window, it would somehow change the patter, too.

    I swapped out the mainboard without any luck. So I thought that it has to be an issue with the panel itself and was trying to assess whats wrong on the control board of the panel.

    Somehow, I managed to short the LVDS protection with a MOSFETS cooler on the PCB.
    Click image for larger version  Name:	20250909_155813.jpg Views:	0 Size:	2.13 MB ID:	3721621 Click image for larger version  Name:	20250909_155828.jpg Views:	2 Size:	2.28 MB ID:	3721625
    I turned around to see, if the panel was completely perished now but somehow, the screen was WORKING now.
    Click image for larger version  Name:	20250909_155249.jpg Views:	0 Size:	2.26 MB ID:	3721623 Click image for larger version  Name:	20250909_155420.jpg Views:	2 Size:	2.14 MB ID:	3721624
    No lines anymore, nothing. I suppose, some capacitors have charged due to the short?

    Still, I don't believe this has fixed the issue in the long run, so what do you think is broken?

    IMO, only a component on the panel control board is possible.
    Attached Files

Related Topics

Collapse

  • JJAAMM
    SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seconds
    by JJAAMM
    This was my main TV for the last 6 years. I'm not inclined to throw out a $2600 TV so quickly so I'm trying to investigate the issue.

    Problem
    TV was disconnected from power for 6 months during construction. When I plugged it yesterday picture was fine, after 30 seconds it dimmed then started developing horizontal lines, picture then starts to ghost vertically until it degrades into vertical streaks. TV always displays a perfect picture when cold. I can unplug TV for 5 minutes and plug it back in and picture is restored for 20 seconds. I can also keep it in standby mode...
    07-06-2023, 06:01 AM
  • noisykid
    Sony XBR-85X950G Gray horizontal lines and vertical picture shift diagnosis?
    by noisykid
    5.5 year old 85 inch Sony Bravia X950G started showing gray horizontal lines across the bottom of the screen and the picture shifts slightly vertically when it happens. The lines sometimes get bigger/smaller vertically and bounce back. See the video for the problem. It seems to be happening after it warms up after an hour or so. Happens regardless of source. Right now there's nothing but power cable connected and it's happening. We did hook up a new Nintendo Switch to our HDMI switching receiver today, and played for a while with no issues, but this problem didn't occur til a few hours later while...
    12-30-2024, 07:15 PM
  • Stanley1843
    Screen Display Vertical Multicolor Lines
    by Stanley1843
    Hello, I have a screen in where sometimes when I open it pop-up vertical multicolor lines (I would say the most of them are green). If I tun off and turn on the screen the lines dissapear or if I leave open the screen after approximately five minutes the lines gone. I measured the below voltages on the main PCB and on the T-CON board and the voltages are the same when it doesn’t display the vertical lines and when it displays the vertical lines. Also, I cleaned all the connectors very good with IPA. I moved back and forth the connectors and the COF tabs but the vertical lines didn't displayed...
    06-29-2024, 11:54 AM
  • srs
    Insignia NS-50DR620NA18 w/ large vertical lines & no picture
    by srs
    I'm not sure what to do next and came here since y'all helped me fix a 50" plasma TV back in 2014, which is still working!

    A friend gave me an Insignia NS-50DR620NA18 50" TV that suddenly developed large vertical lines on it. He said he had no idea what might have caused it and has replaced it with a larger TV. He was going to throw it away.

    I did not notice any bulged or leaking caps on any board, the voltages produced by the power supply match the voltage that the pins are marked. The backlight leds are working. I have tried cleaning the ribbon cables...
    04-22-2023, 02:40 PM
  • Falki
    Colorful LCD Vertical Lines on Samsung ue55es8090
    by Falki
    Hello there, ive recently found an older 55inch Samsung SmartTV.
    Sadly it has vertical lines at the left and one line in the middle-right.

    I have already tested out the connections and have looked at the soldered ribbons of the LCD panel to see if some contacts got loose by pushing them a bit but with no success.
    I have factory resetted the TV as well but also with no luck.

    I am afraid that it is indeed a LCD Panel issue but there are NO scratches or any impact-marks..

    A similar issue has been posted as well but also with no actual response ...
    08-12-2025, 04:19 AM
  • Loading...
  • No more items.
Working...