I have a Sony MDS-JE510 deck which I use in my band to play pre-recorded sequences. It has performed flawlessly Since I bought it in 1997. However the other day I switched it on and was greeted by a 'DISC ERROR' message. I have tried several Discs and all result in the same ' DISC ERROR' message. When I insert a disc I see the usually READING TOC message this remains for maybe 20-30 seconds then the disc error message appears. Does anyone have any ideas or should i just junk it?