Problem Reading DVD-R with 3500A

vbimport

#1

I have a strange problem with my 4 months old NEC 3500A. I can burn without a problem, but reading gives CRC errors. The media is TEAC x8 (Prodisc F01). The FW is 218_liggy_Ritek_SE . When I use CDspeed (latest version) The discs read fine for a while, and then at some point stop reading and I get an error “NO ADDITIONAL SENSE INFORMATION” . When I read it with CDcheck - I get CRC errors. When I simply copy the data off the discs, I also get CRC errors.
However, the discs play fine on DVD players, and I just got a new Asus DVD-ROM E616P2 (FW 1.07) and the same discs read fine on CDspeed and CDcheck.
So it seams the writing is fine, no errors, but the reading is bad.
Any ideas?


#2

After checking some older recordings I made from a few weeks ago, as well as new ones on dvd+r from Teac , it appears to be a case of bad batch of media.