I'd take it back for another rather than deal with repair.
This is a brand-new monitor for my PC, but seems to have a mind of its own. No matter what I'm doing, from reading emails to streaming videos, it brightens and dims about every 20 seconds. I have gone through the menus and there is nothing there that addresses this issue. It's supposed to be flicker proof, but I have no idea how to turn off the auto-dimming. HELP!

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