View Single Post
  #201 (permalink)  
Old November 15th 04, 07:39 AM posted to uk.rec.audio
Jim Lesurf
external usenet poster
 
Posts: 3,051
Default CD transports and resonance

In article , Glenn Booth
wrote:
Hi,


In message , Jim Lesurf
writes


I've also had a number of the PDO Blackburn 'brown rot' discs, and they
have replaced them all FOC when returned to them. However these don't
show holes. Just a brown discolouration of the metal.


I've never seen this first hand, but I have a number of older CDs that
seem to be deteriorating with age (visually at least - they still play
without problems).


Are they developing brownish regions? If so, check the info near the center
of the disc to see if they are PDO, also check the manufacturing date. If
they are, you may well still be able to contact the relevant person who is
dealing with PDO returns. When I did this (a couple of years ago) then
replaced the discs FOC. This included some 'free' cover discs I had from
BBC Music Mag.

I have bought a CD that had mould though. I'm guessing this was just due
to bad storage, and nothing to do with manufacturing. The surface of
the disc was mottled green. Very odd, as the case showed no signs of it.


Never encountered that!

However, as those who used to buy EMI classical LPs can testify, you can
make *anything* badly if you can't be bothered to take due care.

Slainte,

Jim

--
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Audio Misc http://www.st-and.demon.co.uk/AudioMisc/index.html
Armstrong Audio http://www.st-and.demon.co.uk/Audio/armstrong.html
Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html