The problem with the PWM fibrillation

The problem with the PWM fibrillation

HP ZR2440w 60,9cm 24 inch LED Monitor (Personal Computers)

Customer Review

As now read in several forums, LED monitors have the problem that the LEDs flicker to produce a brightness of less than 100%. This has my search for a monitor made quite problematic ...

It all started with the fact that I had ordered me quite naive and ignorant to Samsung S24B420BW. Of course, I found the large 16:10 class, but somehow I got to work an hour or two a headache and my eyes began to tear.
Since I started googling, came among others in the forum at Prad.de a related thread, and first learned something of PWM fibrillation. (So ​​I was not prepared for auto-suggestion eye problems, but they came to me out of the blue.)

Well, as I was reading in the Prad test, the HP ZR2440w has such a high PWM frequency that the flicker should not bother, I ordered this. Optimistic that my problems are over now, I took it into operation. But: Not a bit better than the Samsung. Headache, watery eyes. That the slightly higher frequency improves the thing was - at least for me - definitely not the case.

Because I had almost no desire. But then I ordered but my Eizo EV2436WFS-BK. After commissioning skeptical first time amazed at how well the colors are. (No red, green, or blue, but perfect in my eyes. The other two monitors I had to adjust a lot, until I had a nearly as good picture.) Leave contrast to the preset 50, brightness at 20 down, All Eco-dimming functions disabled. Lo and behold, I suddenly can work for hours and my eyes feel burdened in any way. Madness! So it was actually the PWM flicker!

By the way: In the first two monitors no flicker was also seen by view by mobile phone camera. (This is often recommended as a test.) And yet, they definitely have flickered! The problems were limited when I'm rumgezappt the Internet or photos have been viewed. I have, however, (eg in Word) focuses text read, that went immediately on the eyes. Even that might perhaps explain that not everyone and immediately affected by the PWM fibrillation.
But I can only say: people, let yourselves a no flicker of monitors! At some point - at an earlier, the other later - the eye problems are set! Since I am after my painful experiences now safe!

Sublime 1 January 29 49 Rank: 5/5
September 1
Great as the rest of the range Rank: 5/5
January 22
the ideal solution! 2 Rank: 5/5
November 30
Success! 26 Rank: 5/5
October 12
Makes a sweeping Popo Rank: 2/5
February 16

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