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Whats wrong with this DVD?
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wykoh
Newbie
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11. June 2006 @ 07:56 |
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Hi guys, can anyone who has good knowledge on DVDs pls help to explain? I don't know whats happening with this dvd here....after keeping it for about a year or so, dots came out & its not playable. From left to right: full view of problem dvd, close up view & full view of normal dvd. Btw, this is a factory pressed anime dvd. Thanks in advance
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Member
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11. June 2006 @ 08:35 |
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a few of my ps2 games have dots come up on them aswell. still not sure what it is but I think that its where the two halfs of the dvd are coming apart
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The_Fiend
Suspended permanently
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11. June 2006 @ 08:51 |
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Looks like the adhesive in that disc is dissolving (sometimes mistakenly called dye rot).
If that is the case, then it's slowly coming apart, so i suggest you just toss it and get yourself a new copy.
irc://arcor.de.eu.dal.net/wasted_hate
Wanna tell me off, go ahead.
I dare ya !
This message has been edited since posting. Last time this message was edited on 11. June 2006 @ 08:52
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wykoh
Newbie
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11. June 2006 @ 09:46 |
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What causes this happen? Is it manufacturer QC error? How come some other dvds from the same dvd boxset didn't have this problem? Are the lifespan of dvds so short?
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The_Fiend
Suspended permanently
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11. June 2006 @ 09:55 |
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It's a problem with the adhesive they use, badly mixed batches of adhesive to be exact.
It's not a common problem, so it's not unthinkable that only one dvd out of a set has this, however, i would keep an eye on the other discs if i where you though, just in case.
irc://arcor.de.eu.dal.net/wasted_hate
Wanna tell me off, go ahead.
I dare ya !
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wykoh
Newbie
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11. June 2006 @ 10:14 |
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Thanks Fiend, looks like I must be real unlucky to get this problem....Damn!!! Its going to cost me a bomb again to get another 12 DVD Boxset Rurouni Kenshin anime.....Zzzzzz
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AfterDawn Addict
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11. June 2006 @ 12:01 |
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quote
DVD Rot: Fact Or Fiction?
Jun 8 2006
DVDs are durable but may have their faults.
The Success of DVD
DVD has been celebrated by consumer electronics manufacturers, the movie studios, and an overwhelming number of consumers as the best means of storing and distributing video content. With its large storage capacity, exceptional video and audio quality, and versatility in both home entertainment and data storage, the DVD has become, undoubtedly, the most successful consumer product ever. DVD didn't even exist in the consumer's mind before 1996 and, in a very brief time, has displaced both laserdisc and VHS from store shelves. For all parties involved, this is too good to be true. However, an apparent glitch has surfaced that may put a damper on the party: DVD Rot.
Appearances May Be Deceiving
It seems that, with DVDs, outward appearances may be deceiving. What appears to be an indestructible 5-inch disc, is actually a delicate audio/video/data storage device that is held together by a laminated outer surface containing layers of plastic and reflective metal coatings, and held together by special glues.
If manufactured with proper quality control at the production line end, placed and removed properly from its storage case when used, and stored properly by the consumer, DVDs will definitely outlive their video tape counterparts.
DVD Quality Control Issues
However, it has come to light that a small percentage of DVDs are suffering deteriorating effects, such as cloudy areas (that look like coffee stains), holes, and specs that show up after repeated playings. In addition, some multi-layered DVDs (DVDs that in which the movie is extremely long or has lots of features on a single disc) seem to be experiencing layer separation or other defects that show up as skips or pixelization when the laser in the DVD player has to switch between the layers. Sometimes the DVD player will actually freeze at this point, preventing the playing of the next DVD layer. Much of this may be attributed to lack of quality control at the factory where the DVDs are made.
Another quality control point that is being missed by some manfacturers is the type of center spindle used in DVD storage cases. While most spindles enable the easy release of the DVD, some spindles I have encountered are so stiff that they can tear the edges of the outer lamination of a DVD in such as way that dust and other particles can creep in and cause disc playability issues as time goes on.
Unfortunately, at the time this article is being posted, neither the consumer electronics industry or consumer advocacy groups have addressed this issue in a systematic fashion (watch for updates on this), however, several reliable private parties, some of the print and online media have taken notice and are advocating action in this regard. Even the movie studios are responding in a mixed fashion. Some studios have replaced defective DVDs while others have refused to replace defective DVDs past the normal warranty period.
Impact on Recordable DVDs
In addition, with the rapid acceptance of recordable DVD, no one has done an extensive evaluation of the dozens of brands of DVD-R/-RW/+R/+RW/RAM discs now available for preserving video at home on DVD. On the other hand, there haven't been any major reports of deterioration of these discs. Undoubtedly, there are differences in disc construction quality by manufacturers; my advice would be to stick to a brand name that you are familiar with, such as TDK, Philips, Memorex, and Ricoh.
However, possible deterioration of DVDs may not only be the fault of the disc manufacturers and studios. Many common consumer care issues are also a factor. Just as with any video or data medium care in handling and storage by the user is very important for long life. Leaving exposed discs lying around, especially where children and pets have access, definitely leaves an opportunity for the disc to be damaged. Also, storing the DVD in extreme temperatures or high humidity can warp a DVD or cause layer separation, such as leaving them lying around inside the car on a hot day.
Keep in mind that no audio/video storage medium is completely foolproof, despite claims to the contrary. The vinyl record can be scratched and warped, audio and video cassette tapes can be stretched, wrinkled, and even collect mildew. For those who still have laserdisc collections, some of these discs were (and still are) susceptible to what is known as Laser rot.
In my own experience, I have encountered only one DVD in my 200+ DVD collection that had any defective symptoms and have only encountered two cases of lamination peeling do to a stiff package spindle. So far, I have not had any issues with recordable DVD media, but since recordable DVD has only been available for about three years, not enough time has elapsed for a full evaluation of disc longevity. Over the years, I have had to toss out many more defective video tapes than I have encountered defective laserdiscs or DVDs.
Final Thoughts...
In conclusion, It is fact that problems with DVDs (collectively known as DVD rot) do exist, but it is fiction to conclude that investments in large DVD collections are at risk either now or in the future. With this in mind, I have supplied links to several detailed resources on DVD rot (including photos of defective discs ) and related topics in the side bar of this article. In addition, I have also included a link to a new forum on my site where anyone can voice their opinion, concerns, or any experiences they have had concerning defective DVDs. Watch for future updates on the DVD rot issue as more information becomes available.
http://hometheater.about.com/cs/dvdlaserdisc/a/aadvdrota_2.htm
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wykoh
Newbie
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11. June 2006 @ 18:08 |
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Thanks for the info, looks like I've got lots of info to read on.
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wykoh
Newbie
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13. June 2006 @ 05:03 |
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Hi guys, looks like I've got a new problem. Take a look at this BENQ CDR, care to share wats going on?
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Moderator
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13. June 2006 @ 23:18 |
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that's gotta hurt. i've only ever seen that with cheap crappy cd's (have used untold amounts of plain silver-topped cd's, still have most of them and they're prone to the foil-typed stuff on top coming loose. Have even had this happen on top notch Traxdata cd's that are many years old, i guess just poorly made around the edges so the top foil-stuff just lifts up. That's poor having that happen on a Benq disc, i've used oddles of gold-topped Benq cd's and they're all very well made
Main PC ~ Intel C2Q Q6600 (G0 Stepping)/Gigabyte GA-EP45-DS3/2GB Crucial Ballistix PC2-8500/Zalman CNPS9700/Antec 900/Corsair HX 620W
Network ~ DD-WRT ~ 2node WDS-WPA2/AES ~ Buffalo WHR-G54S. 3node WPA2/AES ~ WRT54GS v6 (inc. WEP BSSID), WRT54G v2, WRT54G2 v1. *** Forum Rules ***This message has been edited since posting. Last time this message was edited on 13. June 2006 @ 23:18
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DogBomb
Senior Member
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14. June 2006 @ 02:23 |
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Not laughing at your expense, but LMAO!!! :) I've had some real cheap CD-Rs flake on me or turn yellow, but that's ridiculous. I would copy that to some good media and never put that in my drive again. You don't want any flakes ruining a perfectly good drive. If you have enough of bad discs, I believe almost every reputable manufacturer has lifetime warranties on their discs. You can mail them to the company and they will send you a replacement (check the disc case for an address). I did that with Memorex DVDs when they were $2 a piece. Or better yet, I think some like Verbatim will let you exchange them at a seller like Best Buy so that'll save you postage. That's why you should stick with reputable media. Those extra few cents give you piece of mind.
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wykoh
Newbie
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14. June 2006 @ 07:16 |
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Ain't Benq reputable?
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AfterDawn Addict
6 product reviews
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15. June 2006 @ 07:10 |
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I'm not sure about benq cdr's but their dvd's are made by daxon and are landfill material imo.
Rig #1 Asus Rampage Formula Mobo, Intel Core2Quad Q9450 CPU @ 3.55ghz, 2gb Corsair DDR2 1066 Dominator Ram @ 5-5-5-15, TR Ultra 120 Extreme w/ Scythe 9 blade 110 cfm 120mm Fan HSF, HIS Radeon 512mb HD3850 IceQ TurboX GPU, Corsair 620HX P/S, CM Stacker 830 Evo Case, Rig #2 Asus P5W DH Deluxe Mobo, Intel C2D E6600 CPU @ 3.6ghz, 2gb Corsair XMS2 DDR2 800 Ram @ 4-4-4-12-2t, Zalman CNPS9500LED HSF, Sapphire Radeon X850XT PE GPU, Corsair 620HX P/S, Cooler Master Mystique Case, Viewsonic 20.1" Widescreen Digital LCD Monitor, Klipsch Promedia Ultra 5.1 THX Desktop Speakers, http://valid.x86-secret.com/show_oc.php?id=348351 http://valid.x86-secret.com/show_oc.php?id=236435 |
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StanH1000
Senior Member
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15. June 2006 @ 11:23 |
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If that 1st disk is a pressed comercial title, it should be used as evidence supporting consumer's rights to backup all of their CDs, DVDs, games, programs, and whatever they have already paid for.
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wykoh
Newbie
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15. June 2006 @ 11:57 |
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@StanH1000
Bulls Eye!!!!
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JoeRyan
Senior Member
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21. June 2006 @ 09:55 |
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The first discs have oil stains in one of the layers that are contaminating the disc. These stains could have been on the substrate or on the disc before it went into the second sputter chamber. The patterning is not typical of adhesive defects, but it is hard to tell from the picture.
The BenQ disc did not have its edges wiped properly after the dye was applied. This allowed the protective lacquer to fail to bond to the polycarbonate on the edge of the disc and pull up at some point. If the reflective layer had not pulled up, it would have begun to tarnish due to sulphur dioxides in the air coming into contact with the alloy, and that would have led to failure over a longer period of time.
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wykoh
Newbie
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21. June 2006 @ 11:26 |
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So....you mean that all these problems happened when the discs are being manufactured?
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JoeRyan
Senior Member
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22. June 2006 @ 12:38 |
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Yes. These all appear to be manufacturing defects.
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ricster
Member
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23. June 2006 @ 03:27 |
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@wykoh - did you buy that box set from new ? Have you tried contacting the seller ?
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wykoh
Newbie
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23. June 2006 @ 08:19 |
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ricster...
I bought it about a year ago from a seller from ebay....I've not contacted him because I don't think the warranty will cover this long. There is noting I can do....ZZZzzzz
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