I lost the data of 2 discs. After inserting in my MZ-NE410, one said "BLANK" to me (5 albuns disappeared!) and another laugh and screamed "ERROR". So, with 2 bad discs on my hands, I walked through minidisc.org foruns. I´ve noticed about the famous "ribbon cable", and the possibility of open my unit was terrifying me even more each minute. But, after about half an hour, my discs were in a perfect state. The only defect of technique: NO DATA RECOVERY. To me and another people that use MD as a portable player of physical CD albuns, it´s not a disaster. In fact, nothing new about the following procedures. I just compiled esparse information in only one post. So, let´s go First, upgrade SonicStage to 3.3 immediately if you´re using an older version. Here For "BLANK" discs: 1) Insert in your unit; 2) Access using MD Simple Burner 2.0; 3) In "Config", ask to format the disc; 4) Done For "ERROR" Disks 1) Refer to the Service Manual of MZ-NE-410. Here 2) Enter Service Mode (AT YOU OWN RISK, OBVIOUSLY): - Set HOLD (On) - While pressing (ENT) key, press: VOL+, VOL+, VOL-, VOL-, VOL+, VOL-, VOL+, VOL-, GROUP, GROUP 3) - access [AUTOCOM 500] using (vol +), enter using (play). - access [510 ACCESS] using (play). - starting at [511 xxSCC], move to [518 xxS03] using (>). - change S03 to S00 using (vol +/-), so the value reads [518 xxS00]. - press (stop) to execute. - disc mechanism should be heard rattling. - exit service mode by removing power. (As we can see here), by pureangst See? Nothing new, just joined, And a reasonable try before open your unit.