Question JVC Home cinema

Dec 1, 2021
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Can someone please help me, I have just bought a second hand JVC home cinema, I have connected the speakers and and CDs plays fine but I can’t get the dvd or tv to connect or have sound. The only connection at the back of the home cinema is for a scart lead which I have connected to the back of my tv with the red, white and yellow leads.
seriously driving me mad!!!