Sorry to revive an 8 year thread but I'm a new user and just found this site looking for solutions. I bought a MDS-JE510 in August of this year from eBay and it just started giving me a "Protected" message trying to record. I tried others with the same issue. I've never had this issue before with these. They always seem to be a well made unit but of course I've been told otherwise. Anyway, I read thru the replies above and find that this could be a system failure ? I paid $60 for this and they're fairly cheap now days on eBay I'm sure your aware of. I like these units but a service would cost more than just spending more $$ buying another one which I hate to do because I just got this two months ago and only used it to test play parts of a disc and it did record at first with no problems. This is a recent issue. Time to invest in another one ? IMO, I have a feeling that's the answer here. Thanks for any advise. Glad to know that there are people still interested in these to have started a site for us MD lovers, even tho it's been that long since it was created. Thanks again for any help. L.D.S.