I have a problem with my Panasonic Combo unit. I set the DVD to record and went out, when I came back, there was a message which said RAM disc faulty couldn't record, insert another disc, as the programme I was taping had finished I removed the disc and tried to stop the machine. The booklet says that an error message should come up to affect it's own repair, I didn't see any such message. Now the DVD keeps trying to read a Disc when there isn't one in and When I put one in it says no read. I cannot use the direct navigator also. It is probably something very simple, put not to me?