after connecting hdmi from mac to tv my tv will not connect

If you're using more than one display, and you can see the image on one of the displays, you can also use Displays preferences to check for connected displays.

Wait a few moments, then press a key on your keyboard or click your mouse or trackpad to wake your Mac.

Press the power button on your computer to put it to sleep, or choose Apple menu > Sleep.

If you're using an external display, sleep and wake your Mac to make it check for connected displays:

Restart the Mac with the display connected.

Check with the display's manufacturer to make sure you're using the cable they recommend.

Try using a different cable that you know is in working order.

If possible, check to see if using a different display or a different adapter works.

If your display has more than one video connection, see if using another connection on the display works.

For example, a mini DisplayPort to DVI adapter can't be connected to a DVI to HDMI adapter. Some video adapters can't be connected together.

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.

If you're using a video adapter, unplug the video adapter from your Mac, then plug it back in to reseat the connection.Disconnect the video cable where it plugs into your Mac, then plug it back in to reseat the connection.

If you're using a display hub, switchbox, or 'KVM,' try connecting your display's video cable directly to your Mac instead.If you're using a Mac Pro (Late 2013) make sure your displays are connected to the right ports.Make sure the external display's power cable is securely connected and that your display is turned on.If you're using an Apple notebook, try connecting its power adapter.If you see similar issues in only one window or app, check with the app's developer for updates or more help.Ĭheck the connections to your Mac and external displays: These steps likely won't help if the issue is only happening in one app. These steps can also help if the image on your screen repeatedly turns on and off (flickers), if horizontal lines appear (snow), or if the image is distorted (torn or scrambled). Try these steps if you don't see an image on your display. If the display image is blank or unusable Please follow the steps listed here to address this issue: I'd like to provide you with some assistance. I know it's important to have your external display working as it should. I understand that your external display is flickering while connected to your MacBook Pro.

After connecting hdmi from mac to tv my tv will not connect