Why does my TV picture not look as good as it did when I first got my HD

Mr.Funeral

New member
Comcast box(black in color)? When I first got my HD Com cast box(with a green sticker on the side of the box that has the letters HD)

I have noticed a change in the quality of the TV picture(I have an Insignia Advanced serious TV 1080 p LCD HDTV,120hz) and the picture settings on the TV are perfect,should I just leave the box off for a few hours and let the HD recharge itself.

I use a HDMI cord that is connected to the box and the other end is connected to the TV(HDMI 3)
 
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