My PX-708A doesn't read some of my old CDs. Why?



The problem is in subject. The history is: I had an ordinal CD-ROM from Mitsumi, then I upgraded to DVD-ROM (NEC 5800C), until it gave up (stopped to read DVDs, and soon CDs also). So I had to buy some new device for reading and maybe for writing DVDs because prices for DVD writers are now much more close to readers then it was some two-three years ago. So I decided to buy something not too fast but very reliable and with good writing quality. Was I wrong or not but I decided to take Plextor PX-708A thou it’s not too new model, but enough stable and not very expensive. In most cases I’m happy with it but time to time I encounter some problems that make me guessing, what is the source of them - my PX-708A or my disks. Namely it doesn’t want to read two of my old CDs. On one of them not all files seen, the second is not recognized at all. These CDs could be read fine on my work ASUS CD-ROM. These disks have unknown origin, I mean I do not know whether they are pressed or burned with something like Nero (I suspect they are burned). If they are burned than with big probability on some cheap media.
Anybody encountered similar problems on their Plextors? Somebody could give me a hint, why Plextor does not read them correctly but other CD-ROMs could? Which additional checks Plextor does to make sure disk is Ok while recognizing it? Maybe a reason is in these disks not following some standards which is not too important for other CD/DVD readers but matters for Plextor? Can anybody give me links to some technical information on this? I asked this question to Plextor and they gave me very short reply: “Laser strength or burn characteristics on the media”. This answer is as good as short but doesn’t clarify the main question I’d like to get the answer to: are my problems due to fastidiousness of my Plextor to cheap disks or this is a real problem of my particular drive?
Please share you opinions. :bow:


Did you do the self diagnostic test on the drive? The instructions are in the manual. By doing the test it will rule out if your drive is operating correctly or not.

My experience with the 708A drive has been great and it even reads dvds that are scratched when all my other optical drives were not able to. If you suspect the cds are some unknown cheapo brand then you’ve already answered your own question. Plextor has a RECOMMENDED & COMPATIBLE LIST of DVD/CD media that they support. Perhaps the cds you have aren’t compatible with the 708A drive which some say is picky about media. Cheap media could be on their COMPATIBLE list but there is no guarantee that it will work with the 708A. Hope this helps you out. :slight_smile: :wink:


A DVD recorder is much more complilcated than an ordinary CD-ROM. It picks up more information from the disc and this could be the cause of the drive failing to interpret this information and thus failing to read and/or recognize the disc. If your problem only happens with two old disc my guess would be that the problem lies with these discs. What I can suggest is to rip the discs with a drive that does recognize the disc and then re-copy them using your Plextor drive. It would also be interesting to see if the discs can be read in a non-Plextor DVD or CD-RW burner. Keep us posted and good luck!