Wikipedia:Reference desk/Archives/Computing/2020 October 9

= October 9 =

Column of stuck pixels
4-5 days ago I got a column of stuck pixels near the edge of my screen. Only one of the subpixels is stuck, so each column has a unique color when showing a dark picture, but looks white when the picture is #ffffff. How is this fixed? I tried Jscreenfix, running it on all white background for a while, and all black background but nothing seems to work and every couple of days when I turn on the screen there's a new column (3 columns now). 93.136.148.247 (talk) 18:51, 9 October 2020 (UTC)
 * What type of device is it? It may well be a hardware fault when it's an entire row or column. LongHairedFop (talk) 12:20, 10 October 2020 (UTC)
 * You should test a second monitor with the same cable (or an external monitor if yours is a laptop screen). If this help you should test with another cable and then with another graphics card. If not it is an hardware problem in the monitor. An option is then to open it (in the limits of the reasonable and after disconnecting power supply) and 1) dust everything with a soft brush or a compressed air duster then 2) plug out and in again all jumpers, cables and connectors you can reach. If this doesn't help it is a defect in an intergrated IC so you need a new monitor. 2003:F5:6F11:9700:E535:8213:E93C:4006 (talk) 19:44, 10 October 2020 (UTC) Marco PB
 * The monitor is connected to two computers, one of which has a fairly new GPU. The same flaw exists with both and also on the temporary black screen while switching inputs. The main, DVI cable was apparently baked into the connector at manufacture, but I think I have another VGA cable somewhere to test the 2nd connection. Is there really nothing else to do but open it up? It doesn't have screws, only square holes presumably for scewdriver as a lever, and I'm not confident I won't ruin it completely if I open it up. 93.142.104.160 (talk) 00:33, 11 October 2020 (UTC)
 * It sounds like you need a new monitor. There might be a chance that a ribbon cable connecting the LCD has come slightly loose, and that would be easy to push in and fix. Given what you say, it would be a problem in the monitor, rather than an external cable. Graeme Bartlett (talk) 00:53, 11 October 2020 (UTC)