Can u use the cords from a regular DVD player to use on a blu ray DVD player

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If you mean audio video connections then yes but you won't get HD except via HDMI. Many BD players only have HDMI, ethernet, and power connections. Some have digital audio out too, High end ones will have analog video and audio connections..
There are active devices to convert HDMI to analog video and audio. A passive cable will not work.
If you mean audio video connections then yes but you won't get HD except via HDMI. Many BD players only have HDMI, ethernet, and power connections. Some have digital audio out too, High end ones will have analog video and audio connections..
There are active devices to convert HDMI to analog video and audio. A passive cable will not work.
 
Solution