Acer xb271hu - pixel brightness "shimmer" - defect or normal?

sfhf

n00b
Joined
Apr 1, 2010
Messages
9
When I turn on the monitor after it has been off for a while (1hr+) it has alternating levels of bright/dim in vertical bands. They disappear after the monitor has been on for some minutes (~5-10). The effect is more apparent at lower framerates (such as HotS being capped at 60 fps on title screen), but is still there at 144hz as well.

Example - initial "cold" turn on of monitor:
https://i.imgur.com/Avc4rnI.jpg
https://i.imgur.com/eulPOSm.jpg

After ~30 minutes:
https://i.imgur.com/VIqU3is.jpg
https://i.imgur.com/sETRICj.jpg


On the pixel inversion test (https://www.testufo.com/inversion) it shows to the eye as alternating light and dark horizontal lines on the moving pattern - evenly spaced but very different looking than when the display has been on for a while (or the still image).

If this is normal for the xb271hu (and/or pg279q, xg2703-gs) It is otherwise an excellent monitor. I am worried it may be a hint that a component failure is imminent though.

Any advice appreciated,
-sf
 
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