Kathy Evans
kathy@purdue.edu
Quoting John Streepy <John.Streepy@cwu.EDU>:
> Jim,
> I remember a little while back you mentioning this problem with the low
> end dvd players (Our department has a couple Norcent players that cost
> about $40 each a couple years ago but have been little troopers, crappy
> remotes but that is another discussion) Is there any theory on why the
> groves are being cut? Is the disc resting in the tray as it plays, I
> always thought the disc was lifted slightly by the drive motor. Just
> curious.
>
> On the subject of disc damage, we had a patron donate a disc that had a
> strange starbust pattern eminating from the center. It played fine,
> except in one spot, so it won't go into the collection, but I've
> wondered what could have made that kind of pattern. Disc Dr. perhaps?
>
> jhs
>
> John H. Streepy
> Media Assistant III
> Library-Media Circulation
> James E. Brooks Library
> Central Washington University
> 400 East University Way
> Ellensburg, WA 98926-7548
>
> (509) 963-2861
> http://www.lib.cwu.edu/media
>
> >>> jimscholtz@sdln.net 04/12/05 1:14 PM >>>
> Hi Liene, Jim Scholtz here. Yes, I have seen such damage on a
> regular
> basis returned from use on our collection. We also clean/repair DVDs
> from 2
> video chain stores regularly and have confirmed reported from their
> main
> office. Teh damage you describe results in playback from "cheap" DVD
> players (commonly, the $39.95 versions available at Walmart, KMart,
> etc.).
> Essentially, they cut grooves in the discs upon playback - even afer
> just 1
> playback! Not really the fault of the patron - nothing they are doing
> wrong. Problem is difficult to repair - machine-wise and the answer is
> to
> buy a better DVD player. Discs are also being made much more cheaply
> (plastic upper and lower layers come apart, metal foil is not as thick
> and
> pits "pop" up causing pixilation in even new discs, hubs are not
> reinforced
> like before. Abnormal heat and spin can make DVDs "shatter" or explode
> in
> the player (this was actually fun to watch). Don't know the answer -
> we are
> just notifying the patron/verifying the various brand names and where
> they
> purchased player (APEX is on brand, but we've also had it happen on
> Goldstar).
>
> Jim Scholtz, Library Director
> Yankton Community Library
> 515 Walnut St.
> Yankton, SD 57078
> (605) 668-5276
> jimscholtz@sdln.net
>
> -----Original Message-----
> From: videolib-bounces@library.berkeley.edu
> [mailto:videolib-bounces@library.berkeley.edu]On Behalf Of Liene
> Chaudhuri
> Sent: Tuesday, April 12, 2005 3:47 PM
> To: videolib@library.berkeley.edu
> Subject: [Videolib] DVD damage
>
>
>
> Hi -
>
> We are having a strange DVD problem in our library. DVDs are being
> returned
> with circular "scratches" or grooves about 1/4 or 1/2 inch from the
> center.
> They are perfect circles, not really scratches, and interfere with the
> playing of the DVD. Has anyone seen damage like this? Is it possible
> for a
> DVD player to damage a disc? Any answers would be greatly
> appreciated.
> Thanks,
>
> Liene
>
>
>
> --
> Liene Chaudhuri
> lchaudhu@rcls.org
> Valley Cottage Library
> 110 Route 303
> Valley Cottage, NY 10989
> (845) 268-7700
> (845) 268-7760 Fax
> --
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