Test for solid red line across LCD

Criminal_Colt · 7th November 2009, 12:57 PM

I have a line across my LCD about 1 pixel wide. It has gone away when I restore the LCD to factory defaults but not always.

I'd like to be sure it's the screen, not the video card. Without getting another monitor involved is there anyway to be sure? Is changing the resolution a simple enough test to rule it out (i.e. it should go away?).

I've got to wait for it to come back before I can do anything to test it.

CAMS · 7th November 2009, 7:09 PM

Print screen should display what the video card is producing.

bugayev · 7th November 2009, 7:57 PM

Quote:

Originally Posted by CAMS

Print screen should display what the video card is producing.

No it won't, it'll produce what the OS has in its redraw buffers - the actual video output can only be tested by looking at the output (ie with a monitor).

If your monitor has a DVI input instead of VGA (or vice versa) try using that to see if the problem remains.

karlcloudy · 7th November 2009, 8:21 PM

If you're connected over VGA, go into the monitor's OCD menu and move the picture up using the manual controls and see if the red line stays in the same place. If it does, it's the monitor

Criminal_Colt · 8th November 2009, 8:05 AM

Quote:

Originally Posted by karlcloudy

If you're connected over VGA, go into the monitor's OCD menu and move the picture up using the manual controls and see if the red line stays in the same place. If it does, it's the monitor

DVI here, would that matter?

LostBenji · 8th November 2009, 10:07 AM

If you got a red line through the POST (BIOS) and it has gone away after defaulting then your lucky. Red line is indication of crook panel or driver board, Resetting points at driver board. If your still uncertain, force spastic settings with panel and wait for line to appear. Connect different monitor to PC and if no line then get monitor done under warranty ASAP.

Criminal_Colt · 8th November 2009, 2:44 PM

Nope, red line tends to come up at logon screen.

I don't *think* it's ever come up at post which is why I wonder about the vid card.

The flat panel is a refurb anyway, in the process of getting it swapped for a new panel as arranged a year ago (fucking useless support dep).

This panel has a bunch of issues with it despite being A02 rev, will find out if the new panel solves the issue on Monday. If I get a red line on a new panel in the same place....well...I think I'll know.

7th November 2009, 12:57 PM	#1
Criminal_Colt Member Join Date: Jul 2004 Location: Sydney, NSW Posts: 1,986	Test for solid red line across LCD I have a line across my LCD about 1 pixel wide. It has gone away when I restore the LCD to factory defaults but not always. I'd like to be sure it's the screen, not the video card. Without getting another monitor involved is there anyway to be sure? Is changing the resolution a simple enough test to rule it out (i.e. it should go away?). I've got to wait for it to come back before I can do anything to test it. __________________ Current Specs: Win7, Intel Core 2 Duo E8500, ASUS P5QC, OCZ 2x2GB @ 1066, 260GTX, ASUS Xonar Essence STX Gear: 450D, Sigma 24-70mm f2.8 Sales: dajvid, QuaCk, ohayes, C-BuZz, Bthree, elcarter1, Trojan, Dennis_B Purchases: Ricardo, Sandeep, datonsta, 1800REVERSE Links: My Flickr, Headphonic, Data Retriever

7th November 2009, 7:09 PM	#2
CAMS Member Join Date: Jun 2001 Location: Perth Thornlie Posts: 1,277	Print screen should display what the video card is producing. __________________ PC1 \| AMD 955 \| GA-MA780G-UD3H \| 4gb RAM \| GTX 275 \| 750gb HD \| PC2 \| Q6700 \| GA 965P-DS4 \| 4gb RAM\| 8800GTS \| 1.5tb HD\| PC3 \| AM2 4850e \| GA-MA790X-UD4P \| 2x1024mb RAM \| 7x1.5tb HD \|

7th November 2009, 8:21 PM	#4
karlcloudy New Member Join Date: Oct 2009 Location: Tasmania Posts: 751	If you're connected over VGA, go into the monitor's OCD menu and move the picture up using the manual controls and see if the red line stays in the same place. If it does, it's the monitor __________________ My PC: Intel Core 2 Quad Q9550 @ 3.74GHz cooled by OCZ Vendetta 2\|\| Nvidia GTX 275 \|\| Corsair XMS3 DHX 2 x 2GB \|\| ASUS P5Q3 Deluxe/WiFi-AP @n \|\| 2 x 500GB HDDs in RAID0 \|\| Corsair VX550W PSU \|\| Antec Three Hundred

8th November 2009, 2:44 PM	#7
Criminal_Colt Member Join Date: Jul 2004 Location: Sydney, NSW Posts: 1,986	Nope, red line tends to come up at logon screen. I don't think it's ever come up at post which is why I wonder about the vid card. The flat panel is a refurb anyway, in the process of getting it swapped for a new panel as arranged a year ago (fucking useless support dep). This panel has a bunch of issues with it despite being A02 rev, will find out if the new panel solves the issue on Monday. If I get a red line on a new panel in the same place....well...I think I'll know. __________________ Current Specs: Win7, Intel Core 2 Duo E8500, ASUS P5QC, OCZ 2x2GB @ 1066, 260GTX, ASUS Xonar Essence STX Gear: 450D, Sigma 24-70mm f2.8 Sales: dajvid, QuaCk, ohayes, C-BuZz, Bthree, elcarter1, Trojan, Dennis_B Purchases: Ricardo, Sandeep, datonsta, 1800REVERSE Links: My Flickr, Headphonic, Data Retriever