We have a digital box and VCR attached to our Tv and I am not sure if I have the DVD player cannected properly. The instructions are not that good. It worked fine the first time I used it but since then every disk I put in says 'no disk'. I tried to reconnect it in different ways but it always comes up the same. This is the second player I've had. The first was returned because it kept saying 'invalid disk' The trouble shooting advice also is not helpful. Hope someone here can! Thanks.