Both players you tried, the Sony and the Denon, are set to progressive scan by default. Your JVC television does not support progressive scan. That's why you only got a black&white picture.
The reason your LCD display worked without a problem is because LCD is progressive scan by design - that's how an LCD panel works.
You must set the DVD player to interlaced to use it with your JVC.
The Sony changer you tried has a button on the front panel marked "Progressive." All you would have needed to do to fix your problem was press it to set the player to Interlaced.
The reason your LCD display worked without a problem is because LCD is progressive scan by design - that's how an LCD panel works.
You must set the DVD player to interlaced to use it with your JVC.
The Sony changer you tried has a button on the front panel marked "Progressive." All you would have needed to do to fix your problem was press it to set the player to Interlaced.