Re: DVD writer about to die???

On Tue, 10 Jan 2006 14:50:01 +0000, Chronos
<chronos@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:

>After replacing Jaimie Vandenbergh with a small shell script on Tuesday
>10 Jan 2006 13:20, the following appeared on stdout:
>
>> Not necessarily - I just had to fix the reader in one one of my Sun
>> boxes, by opening it up and twiddling the laser power gain trimming
>> pot by a sixteenth of a turn or so (they're usually near the laser
>> head somewhere)
>
>Thank you, Jamie. I forgot to try that on a laptop DVD writer that
>refuses to read even its own discs, since I haven't seen gain pots on a
>LASER head for ages. This one happens to have them, and is now reading
>100% all formats after a bit of a "tweak".

My pleasure, though Robert's comments that most drives don't have them
now is interesting too. But desktop optical drives cost nothing now,
so that's fair I suppose - lucky that your laptop did.

I admire your intro line, btw (though I think "*very* small" is the
canonical form!).

Cheers - Jaimie
--
"... you must remember that if you're trying to propagate a creed of
poverty, gentleness and tolerance, you need a very rich, powerful,
authoritarian organisation to do it." - Vice-Pope Eric
.

Relevant Pages

  • Re: Flash Pump Options
    ... I took a chance and purchased a laser head on. ... Holmium rod already installed, ... The Pump ...
    (sci.optics)
  • Re: DVD writer about to die???
    ... by opening it up and twiddling the laser power gain trimming ... refuses to read even its own discs, since I haven't seen gain pots on a ... LASER head for ages. ...
    (uk.comp.homebuilt)
  • Re: Alignment of a beam expander
    ... About $35 for a HeNe laser. ... Looks like that's only the laser head, ... $1 laser pointer would probably work almost as well. ...
    (sci.optics)