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Old November 15th 04, 05:42 PM posted to uk.rec.audio
Glenn Booth
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Posts: 160
Default CD transports and resonance

Hi,

In message , Jim Lesurf
writes
In article , Glenn Booth
wrote:


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.


Thanks Jim. Some of them do have brownish areas that appear to be
growing. I'll try to dig one or two out and take a closer look - it
won't be immediate though, as most of the collection is currently boxed
up ready for a house move.

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.


Ain't that the truth! Some of the EMI LPs I remember from years ago
seemed to be the 'extra floppy' weight of vinyl, that would bend under
its own weight.
--
Regards,
Glenn Booth