Dell Monitor - Vertical lines - Stuck pixels?
I have a Dell U2717D monitor. Unfortunately, there are a few vertical lines in a spot of the screen. I’ve read a bit on the internet trying to find a solution. I’m used to repair screens that don’t power on (faulty capacitors), but not this type of problem (pixels).
First of all, the problem occurs even without connection to a PC. So, it is not a bad cable such as HDMI or DisplayPort. I can see the lines by powering on ONLY the monitor.
I’ve done the BIST test from Dell. The test puts a colored background such as RED, BLUE and GREEN. I can see that the lines alternate in colors. Sometimes there are more lines, sometimes less depending on background color. I don’t really know what to understand from this.
I’ve disassemble the monitor to check for any loose connections inside. Unplugged and plugged back the ribbons, nothing has changed.
Is this case repairable ? What could I do ? Could the ribbons be defective ? Should I try to find replacing ribbons or they can’t be the source of the problem ? If so, where could I buy these (I’m from Canada) ? Is the problem inside the panel ? At this point, I believe that nothing could be done ? :(
This is a great monitor that works really well otherwise. I would really like to repair it.
I’ve already seen the following question: Vertical red line on Dell monitor. Stuck Pixel?
But, my problem isn’t solved.
What could be defective ? A ribbon cable ? The board ? Something inside The Panel LG LM270WQ5 (SS A1)?
Thank you very much for your help,