Hold Option and press the Detect Displays button. Go to the Apple menu, then System Preferences > Displays. If that’s the case, make sure that the adapter supports video throughput, and try a different one if you suspect that it doesn’t. For example, MacBook Air only has Thunderbolt ports. There are plenty of cases where you may be forced to use an adapter. If a port malfunctions, you’ll probably need to take it to a repairman.Ĭheck if you chose the right adapter. If a HDMI cord not working Mac, the most you can do is discard and replace it. In case there are multiple ports of the same type on your devices, try different ports. Then, try checking if the MacBook works with the monitor, or if the TV works with a different Mac or PC. Say, for example, you’ve found that connecting your MacBook to your TV doesn’t work.

An average user can do this by connecting different combinations of devices and seeing if they work. Let’s See What the Potential Issues CouldĬheck for faulty ports or cables. However, keep in mind that some issues may require professional help and can’t be fixed at home. If you want to identify the issue, eliminate all possible factors - and only then a solution could be found. It could be the cable, one of the connected ports, other hardware components, missing or outdated drivers, and even incorrect settings. HDMI Mac to TV not working? Just like any cable technology, HDMI has several common points of failure. How to fix the problem when HDMI not working with Mac

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