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Conference cookie::notes$archive:cd_v1

Title:Welcome to the CD Notes Conference
Notice:Welcome to COOKIE
Moderator:COOKIE::ROLLOW
Created:Mon Feb 17 1986
Last Modified:Fri Mar 03 1989
Last Successful Update:Fri Jun 06 1997
Number of topics:1517
Total number of notes:13349

665.0. "Are CD's Indestructable?" by VAXWRK::CONNOR (John Connor) Wed Mar 04 1987 13:27

	Do CD's go bad. I heave one that did. It pop's, snaps
worse than a regular disc. It also gets stuck and loses where it is
i.e. skips around. I looked at the CD but can see nothing obvious.
It used to play fine (about 2 months). I thought CD's were nearly
indestructable. CD reader plays ever other CD okay.
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665.1PARITY::SZABOWed Mar 04 1987 13:417
    Sounds like the problem I had when I bought my Sony CDP-35 player,
    except that I didn't notice any pops or snaps.  One disc in particular,
    skipped all over the place, making me think I had a bad disc.  It
    turned out to be the player.  Most replies to my note on this, about
    6 months ago, attributed this to the laser being aligned "on the
    hairy edge", and that disc brought out the problem.  So, maybe it's
    not the disc but the player itself.  Check it out.
665.2QUARK::LIONELFree advice is worth every centWed Mar 04 1987 16:027
    I've read nothing that suggests that CDs deterioriate over time.
    It may indeed be that your player has some particular problem with
    this disc.
    
    Note that the "laser rot" malady that affects some LV discs is
    unrelated to CDs.
    					Steve
665.3CLEANING THE DISCJACOB::RADLERWed Mar 04 1987 16:5316
    
    One of my discs all of a sudden after playing fine for two months
    started to play out of synch. I thought it was the player. I couldn't
    understand it because all my other discs were fine. I called up
    the dealer and he told me to wipe the disc from middle to end and
    look for fingerprints especially. He said sometimes a disc can be 
    a fine line from good to faulty. If you happen to get a fine line
    disc, a fingerprint could cause the laser not to be able to read
    properly. I wiped it down and looked for fingerprints and corrected
    the problem. The disc plays fine now. I'm not sure if he was correct
    or not but cleaning the disc with a lint free dry cloth seemed to
    do the trick.
                                                   Rich
                                               
    
    
665.4Better than they're cracked up to be...DSSDEV::DAVISONThu Mar 05 1987 12:3513
    I have a disc which developed cracks in it running from the hole
    in the center of the disc to the beginning of the music.  Since
    the music begins very close to the center, these cracks are very
    short, but one of them out of the 4 cracks runs radially out from
    the center right into the recording.  I believe that the problem
    may stem from the "tension button" in the center which holds the
    disc in place using slight pressure.  After noticing the cracks,
    I inspected the jewel box and the button and found that the button
    was holding the disc with more pressure than was needed by other
    jewel boxes and may have caused the cracks.  Another possibility
    is that I may have pulled the disc out roughly without completely
    pressing the button to release it.  In any case, the disc plays
    well and sounds fine!
665.5The next test is ...NHL::NEILPeter C.Thu Mar 05 1987 16:217
RE .0

Have you tried playing that disc in another player, both before and after
cleaning ?

P.
665.6Try a little love....STAR::JACOBIPaul Jacobi - VAX/VMS DevelopmentFri Mar 06 1987 13:5914
    Please, please, please, for heaven's sake, don't abuse your CD's!
    Naturally, if you treat a CD like sh*t, they're going to sound like
    sh*t.  Follow the directions printed on the box.  Treat them gently,
    like a conventional LP, and they WILL last a very long time.  After
    playing, put them gently back into the box.  Don't sit on them or
    throw them against the wall.  Keep your fingers, dust, lint free
    cloths, toothpaste and everything else FAR, FAR, away from your
    CD's.
    
    I treat my disks like children.  I protect them with my love.  :^)
    
    
    						-Paul
      
665.7speaking of toothpaste...TALLIS::JBELLWot's..Uh the Deal?Sun Mar 08 1987 21:596
    I had a friend who would throw his CD's around like frisbees.  After
    a while, one of them got so scratched up that it wouldn't play.
    
    The solution was to polish out the scratch, and that fixed it.
    
    -Jeff
665.8CD's are expensive FrisbeesSTAR::JACOBIPaul Jacobi - VAX/VMS DevelopmentMon Mar 09 1987 13:0610
    RE: .7
    
    The correct solution was to NOT throw your CD's around like Frisbees.
    
    I have no sympathy for persons who abuse their CD's.  I keep mine
    in the jewel box and have no problems.
    
    
    						-Paul
    
665.9His Masters Voice....Yap!! Yap!!ROYCE::ROWLEYStrollsTue May 05 1987 08:078
    There is an engineer here in CSS Reading whose spaniel decided to
    get into the music critic business. It chewed a CD jewel case up
    and put teethmarks in the disc itself. 
    
    It still plays with no perceptible effect on the sound.
    
    Strolls