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Any idea of the model of the Coby TV (located on the sticker on the back of the set)?
Also, do you have another HDMI cable you can try?
Offhand, try this first (if it doesn't work, then reply back with the info requested above).
1) Shut the TV off and unplug the HDMI cable from the TV and the Xbox.
2) Unplug the TV's power cord then press and hold the power button on the TV itself (not the remote) for 10 seconds and release.
3) Wait a minute then reconnect the HDMI cable, then plug the TV back in, then try to select HDMI.
Again, is that doe not work then reply back with the info requested above.
Are you still having the same problem?
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