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crwdns2934241:0crwdne2934241:0 Pedro Celestin

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Bightness control no longer working

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Some time ago I've sent my Cinema Display to repair under warranty. But after that, the brightness control of the display is missing from the display settings.

I think they may have forgotten to connect something inside the display. So, I'd like to know which connections I should check for it.

Note: the USB cable of the display is properly connected to the computer and the audio is working fine. The video is also working fine, but only with full brightness.

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Apple LED Cinema Display 27"

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open