My tv says no signal when my apple tv is plugged in.

I tried a different HD cord and plugging it into a different HD port still the same thing whats wrong with it? my blue ray player works fine with ether cord and ether HD port? can you help me please.

bradyandemaly,
The article linked below is a good starting point should your Apple TV fail to provide a signal to your TV.
Apple TV: Basic troubleshooting
https://support.apple.com/en-us/HT200197
Sincerely,
Allen

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<About NVRAM and PRAM>
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Are you sure you have a good miniDisplayPort to HDMI cable?
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My tv says no signal when my apple tv is plugged in.

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