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Has CD Quality Control Slipped?

Posted by Cliff on from the has-anyone-else-noticed-this dept.

morris57 asks: "In the past few months, I have had at least 3 brand new compact disks or DVDs not work right out of the box. I don't mean that any sort of copy protection on the disk prevented me from using them; they were simply defective disks. I was able to exchange my DVD of 'The Matrix Reloaded' at Best Buy for a working copy, but some disks I got for Christmas I just recently opened and they are either unplayable or garbled. It is not a hardware issue, either. I've tested the disks in several types of players: new, old, component, computers, etc... It seems to me to make a very good case for downloadable media files, although I know these tracks are not available on iTunes or audible.com. So, I guess I'm wondering if the Slashdot community has noticed a decline in quality control of CDs/DVDs. What can be done (individually or communally) to not get burned by defective disks?" The solution for this particular type of problem boils down to simple consumerism. If you get a defective product, return it! If manufactures notice a high rate of return (and they should), they'll hopefully address the quality of what they ship. Has anyone else noticed an increase of non-working DVDs or CDs?

3 of 80 comments (clear)

  1. Falling life of CDRs by Anonymous Coward · · Score: 4, Interesting

    I bought a 100 pack of Philips CDRs and I thought it was a freak case - perhaps it is not.

    Almost 30-40% of the disks scratched easily, and didn't work after 2 months of safe storage. They seemed to develop scratches for no reason at all.

    I have read that the normal life expectancy of a CDR is about 2 years, in my case, the life expectancy seems to be 3 months.

    Note: Other brand CDRs bought more than 2 years ago record just fine, and have survived for 2 years or more.

    Has anyone else seen this trend? Cost cutting perhaps? I know that CDR manufacturers are experimenting with cheaper variants of pthalocyanine to get more bang for the buck.

  2. Holiday Season by Merlin42 · · Score: 4, Interesting

    I haven't noticed it with [C|DV]D's personally, but I have had problems in the past with electronics I purchased around the holiday season. My guess is that on occasion a manufacturer will push manufacturing beyond what QA can handle in order to meet demand at the end of the year. The only choice is to return, of course at this time of year the manufacturers expect high return rates so it might not make a difference.

    --
    Thoughts on tech, Software Engineering, and stuff
  3. Re:They don't care by Jerf · · Score: 4, Interesting
    Technically, this would not be "the recording industry" but "the manufacturing industry". I don't know but I'd bet significant money that physical CD production is outsourced by all RIAA members; it makes zero economic sense for them to do otherwise.

    If returns become a problem, be assured that that information will wend its way back to the CD manufacturers eventually, with direct economic consequences.

    Direct economic consequences is why this occurs; I posted about this on my weblog in relation to a similar Ask Slashdot regarding hardware. The CD manufacturers will be using the exact same statistical techniques I mention in my post on CDs that electronics manufacturers use on their stuff.
    About two years ago [now more like three], I took Statistics in college. The second most interesting part of the course was the industrial manufacturing focus, specifically quality control.

    Even more specifically, reliable ways to determine how much quality you can take out of the product and still meet some specification with some good probability....

    On the other hand, these are the techniques used to reliably manufacture a device that will fail in 2 years, plus or minus 3 months, with 50% probability. This is the source of the flood of cheap garbage that has really only been gaining steam in the past four or five years; yes, in the 80s and 90s people were decrying "consumerism" but it's gotten several times worse as some of these techniques become refined and universally applied.

    The upshot of all of this is yes, the quality of consumer electronics has been steadily declining for a decade or two now, along with everything else that comes off the factory floor, and the better the statistical techniques get, the closer to the consumer rejection threshold this stuff will get.
    (New emphasis; as I'm quoting myself "emphasis mine" doesn't make too much sense ;-) )