A.Falconer

I've had my MZ-NH900 for 3+ years and lately it has started to have som e problems. At first I noticed that it would take a long time to Display the contents of a HI-MD when in sonic stage. Then every once and awile when transfering an album via sonic stage, MP3 to 48K Atrac it would show graphically on the player that the music was there, but there would be no sound. Next on any of my 11 full Hi-MD disks on any track at any time the player would continue to play but their would be no sound ( I checked head phones and all connections ). The final progression has been that along with the above issues, 25 % of the time when putting a new disk in the player an error is produced that says no data. Can anyone help? I like this player alot. It's very handy for bootlegging concerts. Thanks in advance A.