![]() ![]() ![]() It’s possible the screen just doesn’t perform as consistently at such a high brightness level. Other reasons for the limited brightness could be related to the overall performance of the device. If you wanted something brighter, Apple could be saying, spring for the more expensive MacBook Pro. The Air is meant to be the company’s most minimalist laptop. Why would Apple do this? - No clue! Apple is usually all about maximizing the potential of its hardware offerings, so it’s surprising to see the company’s own operating system limiting itself in this way.Īs the testers mention, it’s possible the lower brightness level is a marketing move by Apple to distance the Air from the beefier MacBook Pro line. ![]() To the naked eye, the screen isn’t really going to look much different between operating systems. Both operating systems hit about the same 1200:1 contrast ratio. Colors are very accurate on the screen, both on Windows and macOS. Minimal other differences - In the tests run by, maximum screen brightness was really the only noticeable difference between running Windows and macOS on the MacBook Air. Likely contenders include performance stability and marketing reasons. That’s unusual for the site’s checks it notes that, in tests of past machines, brightness has varied very little from operating system to operating system.Īpple hasn’t made any public mention as to why macOS might purposefully hold back its max screen brightness. When running Windows, the Air’s brightness maxed out at almost 550 nits, where macOS yielded a maximum of only a little more than 400 nits. The Air’s brightness limitations were spotted by staff at when they installed Windows on their MacBook Air and found the display to be about 30 percent brighter than when the device was running macOS. Hope this helps, good luck.Apple’s 2020 MacBook Air is faster, has a much-improved keyboard - and won’t let the screen hit its maximum brightness. Test it with a multimeter and see if you have continuity. If the numbers are right, then you have a fuse for your backlight on your logic board. Replace battery connector with sleep switch. Check cables around the hinges for damage.ġ0. Verify that LCD panel cable and LVDS cable connections are seated properly and that the cables are not damaged. If video symptom is same on external display, replace logic board.Ĩ.Verify battery connector with sleep switch connection. If video is fine on external display, troubleshoot LCD panel and verify cable connections to inverter and LCD.Connect an external display, and check for video on external display. Restart the computer, then hold down the Option-Command-P-R keys until you hear the startup sound at least one additional time after the initial startup sound.ħ. Warning: Make sure you do not hold down the “fn” key when resetting the SMC.Ħ. Resetting the SMC means you will also need to reset the date and time (using the Date & Time pane of System Preferences). See Knowledge Base article 303319, “Resetting MacBook and MacBook Pro System Management Controller (SMC)”. ![]() Reboot the computer-hold down the Control and Command keys and press the Power button, or press and hold the Power button for 5 to 10 seconds to shut down the computer, then press the Power button to restart.ĥ. Press F2 (with the fn key pressed and not pressed) to increase the screen brightness setting.Ĥ. Try known-good power outlet, power adapter, and power cord.ģ. Apple suggest:" No display or dim display, but computer appears to operate correctly and has video operating on external display (display is fine after startup, but after a few seconds no display or dim display)Ģ. If it does not, then you are having GPU trouble on your computer. If so, then it is the inverter/backlight circuit of your computer. Try to connect an external display and see if that works. Since you already replaced the LCD with a working one, it is possible that this is caused by a bad inverter. So this answer is a general answer and hopefully the Mac Guru's can help you out further. Don, first I must admit that I am not a Mac person. ![]()
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