Posted by mike.j.harvey on 09/24/06 11:17

geoffatmhg wrote:
> So it is possible that one (say DVD) could be faulty and the other could
> work. It appears that this is whats happening with my Tevion. CD is fine,
> DVD wont play. Think I'll return it
>

Hi Geoff

Yes DVD players and also computer DVD drives have separate lasers for
the different wavelengths of laser light needed to burn and read the 2
different types of disk. It need not necessarily be a laser diode
itself which is faulty, there could be a fault with the associated
circuitry, but, yes there are sufficiently separate arrangements for
CDs and DVDs that what you describe is a perfectly plausible failure
mode .

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