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Tv has no signal

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Tv has no signal

Tv has no signal, no channels on master list
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Re: Tv has no signal

Test all your connections to make sure they are both tight and in the proper places. Make sure the cable box is turned on. Make sure your TV is on channel 3 (or 4 in some cities) or on HDMI if you have that connection coming out of the cable box. If none of these fixes your problem, call Comcast.