Date   : Tue, 10 Aug 2010 13:47:22 +0100
From   : acorn@... (Andy Ford)
Subject: colour crystal adjustment in BBC master

Regarding getting colour out of a Master, some models (later ones if my 
memory is not playing up) just need a link making in the same fashion as 
you would do to a later B's, from memory Link 11.


Andy.



paul aslin wrote:
> Is it just my bad luck or is the adjustment (VC2) for this crystal rather
fragile ?
>
> The one in my latest acquisition doesn't seem to do anything and then I
noticed a layer of plastic inside had broken away. Any ideas as to what to
use for a replacement, I couldn't find anything with the correct range last
time I looked.
>
> What I'm doing is connecting the video input (vi) of the modulator to a
phono plug. It should product a colour picture but I get nothing. I also
tried the 470pf capacitor mod, didn't work either.
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