Hi everyone, I just bought a chromecast and when I tried to connect it with my LG TV who has one HDMI port , it didn’t work

Did you connect the power supply to the Chromecast?
If the Chromecast video resolution is higher than the TV can handle you won't get a picture. Try connecting it to another TV. If you get it working then set the resolution to match the native resolution of the first TV. If you can't get it working on the 2nd TV it is probably a bad unit.
 

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