glittering pixels on lcd

imported_itr

Senior member
Mar 2, 2005
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this is very rare, however, i sometimes get glittering pixels when looking at pictures. is this b/c of FRC (frame rate control) from TN panels?

"This, however, do not say much about the actual colour reproduction. The TN panels use FRC (Frame Rate Control) to compensate for the missing shades. FRC is algorithms which can produce a new colour from to favourable. In most cases it works fine but if the algorithms fail to produce a new colour a glittering phenomenon can occur (can be seen occasionally when watching movies)."
 

akugami

Diamond Member
Feb 14, 2005
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If it's the same few pixels that are glittering even with different pictures then it could be faulty or dying sub pixels.
 

fighterpilot

Member
Nov 14, 2003
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You mean like this:

Sparkles

Look around the nVidia logo. This photo was taken from nZone.com.

I had that with a KVM switch. I found a KVM that didn't have that effect, well at least not extensively. ATI cards have the option for both "Use alternate DVI mode" and "Reduce DVI frequency" which elimnates ANY sparkles. If you have an ATI card, you might want to go into General preferences and select those boxes and see if it helps.
 

Mark R

Diamond Member
Oct 9, 1999
8,513
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Is the glittering in solid areas of colour, or only at edges?

If it's in solid areas then it's likely to be FRC.
If it's at edges (and it looks like the edges are shifting very slightly) then can be is a sign of a low quality analogue connection.
If you are using DVI and are getting random sparkles all over the screen then it suggests a poor quality digital conection.

If you think it's a connection problem, you may be able to mitigate things by adjusting monitor settings and driver settings. E.g. reducing refresh rate in analog mode, or reducing 'DVI frequency' in DVI mode. If you are using a KVM or extension cable, see if the problem is relieved by removing the cable/KVM. If it is helped, then you need to look for a better extension/KVM.