Why Won't My Desktop Show Up on My Connected TV?
Does that give you a picture? If so, start adjusting the settings up to see how high you can go before you lose the image. At the very least, that might help you figure out whether you have a system issue or a TV issue, and you can fiddle around with settings from there to try and get it to work. Do you have a tech question keeping you up at night? Tired of troubleshooting your Windows or Mac? Looking for advice on apps, browser extensions, or utilities you can use to accomplish a particular task?
Let us know! Tell us in the comments below or, better yet, email david. The A.
No picture – screen is black or another color
David Murphy. It can also mean that there is a power issue, that the brightness is too low, or something else. Is the display supported?
For many 4K displays, you need to be using a Mac with a graphics card powerful enough to push that many pixels. The general rule of thumb is that most modern Macs manufactured after will support such a high resolution but not all of them.
Connect the Mac to the TV with HDMI & Adapter
Apple has an online support document that lists all of the Macs that are compatible with 4K displays. Is your brightness turned all the way down? Silly me — I just forgot to turn the brightness back up. Check the power plug on the external display: Hey, things happen! If you live where Earthquakes are common, or you have rambunctious kids running around all the time, plugs are destined to work their way out of their sockets.
One of the things Apple recommends you try if you are using an Apple notebook, such as a MacBook, MacBook Air, or MacBook Pro is to connect the power adapter to give it additional power. Re-seat your video connections: Eliminate the possibility of a loose display connection by unplugging your display cables and plugging them back in properly.
Find out how to connect your MacBook to a TV
A loose connection will keep a proper electrical connection from occurring and can cause issues with your external display. Are you using the right port? Make sure your display s are plugged in to the correct port s. Avoid video adapter chains: If possible, remove one of the adapters and avoid chaining them together.
How to Connect a Mac to a TV with HDMI for Full Audio & Video Support
Does the display work with other connections? Try using another computer or another video source and see if the display works with that video connection. Is your video cable bad? Try using a known good video cable and see if the problem persists. If you're using the Thunderbolt 3 USB-C to Thunderbolt 2 Adapter to connect to a compatible display and the display doesn't show an image, try unplugging the adapter and plugging it back in. Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement.
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Contact the vendor for additional information. Other company and product names may be trademarks of their respective owners. Before you begin You can resolve many display issues by updating the software on your Apple devices, cables, and adapters.
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Connect your external display and any Apple video cables or adapters that you use with it. From the Apple menu, choose App Store. Click the Updates button in the App Store window. Install any macOS or firmware updates that are listed. If the display image is blank or unusable Try these steps if you don't see an image on your display. Check connections Check the connections to your Mac and external displays: If you're using an Apple notebook, try connecting its power adapter.
Make sure the external display's power cable is securely connected and that your display is turned on. If you're using a Mac Pro Late make sure your displays are connected to the right ports. If you're using a display hub, switchbox, or "KVM," try connecting your display's video cable directly to your Mac instead.
Disconnect the video cable where it plugs into your Mac, then plug it back in to reseat the connection. If you're using a video adapter, unplug the video adapter from your Mac, then plug it back in to reseat the connection. If you're using more than one video adapter to connect your display the adapters are "chained" together , try connecting the display using only one adapter if possible.
Some video adapters can't be connected together. If your display has more than one video connection, see if using another connection on the display works. If possible, check to see if using a different display or a different adapter works. Try using a different cable that you know is in working order.
Check with the display's manufacturer to make sure you're using the cable they recommend. Restart the Mac with the display connected. Detect your display If you're using an external display, sleep and wake your Mac to make it check for connected displays: