Tropical Dick Down - review by bono-one| Author | Post |
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| sdc Member 236 Posts 4/03 | Apologies to the moderator's if this is in the wrong forum. I've just noticed that one of my disks - a disk that has functioned perfectly on two or three previous occasions - will no longer play. It's about two years old and there are no visible defects on the playing surface. I've tried it in two players but to no avail. In mine, the disk will spin but not initialize; in my girlfriends, a 'no disk' message is displayed. Has anyone else had this kind of problem? I've contacted the vendor but don't expect them to be overly concerned about an item that left their hands long ago. I was planning to contact the studio themselves (metro) but can't find an appropriate email address. Any suggestions? SDC Topic Moved by - Gabriel Nine on Oct 19 2003 [Link] |
| Gabriel Nine Senior Member Firecracker 1273 Posts 8/01 | |
| Flash Golden Age Classic 11018 Posts 5/01 | |
| Harry Joystick Member 740 Posts 8/02 | The disc looks in perfect condition but since it was purchased so long ago, it looks like I'm fucked. |
| jamesn Senior Member Cambridge, MA 750 Posts 1/04 | |
| daviangel Member Only time I would buy a girl flowers is if she was in the hospital 455 Posts 1/04 | Like laserdiscs, DVDs are made of two platters glued together, but DVDs are more rigid and use newer adhesives. DVDs are molded from polycarbonate, which absorbs about ten times less moisture than the slightly hygroscopic acrylic (PMMA) used for laserdiscs. DVDs can have delamination problems, partly because some cases or players hold too tightly to the hub. Delamination by itself can cause problems (because the data layer is no longer at the correct distance from the surface) and can also lead to oxidation. Delamination may appear as concentric rings or a "stain" around the hub. So far DVDs have had few "DVD rot" problems. There have been reports of a few discs going bad, possibly due to delamination, contaminated adhesive, chemical reactions, or oxidation of the reflective layer (see www.mindspring.com/~yerington/ and www.andraste.org/discfault/discfault.htm). The most likely explanation for DVD deterioration is that during the early days of DVD (1997-2000), disc manufacturing processes and materials were not as good as they should have been. Many improvements have been made since then, so the minuscule problem has probably become even more minuscule. There are also occasional reports of "cloudiness" or "milkiness" in DVDs, which can be caused by improper replication. An example is when the molten plastic cools off too fast or isn't under enough pressure to completely fill all the bumps in the mold (see this archived article from TapeDisc Business for more). Minimal clouding doesn't hurt playback and doesn't seem to deteriorate. If you can see something with your naked eye it is probably not oxidation or other deterioration. The result of deterioration is that a disc which played perfectly when it was new develops problems later, such as skipping, freezing, or picture breakup. If a disc seems to go bad, make sure it's not dirty, scratched, or warped (see 1.39). Try cleaning it and try playing it in other players. If the disc consistently has problems, it may have deteriorated. If so, there's nothing you can do to fix it, so you should try to get a replacement from the supplier |
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