U2715H makes buzzing when the brightness is less than 85 ~.

My new monitor U2715H was beautiful, but makes an annoying Hum/Buzz sound. I found that I could get the sound to go by increasing the brightness above about 85. Given that this brightness level was too high for my application and the sound was distracting, I contacted Dell support and said it was a very unusual problem. They sent me a replacement monitor that I just was put in place. Unfortunately, the replacement screen suffers exactly the same problem! I found messages here to describe this same question in other models (U3011, U2312HM) a few years ago but have not found how / if the issues have been resolved subsequently. Any advice on getting a monitor which do not suffer this problem and/or technical explanations for why that should happen would be very useful.

A little more internet research gave a lot of information on this issue as well as possible workarounds:

www.SilentPCReview.com/stop_lcd_whine

www.SilentPCReview.com/.../viewtopic.php

www.gHacks.net/.../Decrease-Noise-of-LCD-Displays

I will try to adjust the brightness ~ 80 to remove the buzz and then use a software solution to reduce the observed brightness.  This seems as good as the appropriate brightness swing the OSD setting and eventually consume 10 to 20% more energy, but can be a viable compromise.

Dell Ultrasharp monitors so I knew there was a good quieter alternative to the U2715H, I would definitely try this, but the information I have suggests that this question may be present in 27 ".

Tags: Dell Peripherals

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