Date   : Sat, 24 Jan 2004 20:31:41 +0000
From   : Jules Richardson <julesrichardsonuk@...>
Subject: Domesday setup questions

Well some kind soul left a Domesday setup at the museum where I work,
and nobody has a clue where it came from! We already had one ailing
system, plus bits from another couple.

So, LV players first:

  We now have 3 players (plus a dead laser unit from a fourth; I gather
the helium's prone to leaking out over time). One player isn't the
traditional Philips unit, so I've ignored that one for the moment.
  Of the other two, one player seems to have a very bad video output on
the SCART connector - scrambled colour and breaking up of the picture in
the horizontal direction.
  The other player (the one normally in use as it just does a rolling
demo) has - so I've been told - a broken genlock.

  Are there any common video output faults which I should check? Anyone
have the Philips player schematics?

  Ditto with the player with the bad genlock - are the genlocks prone to
any particular sort of failure?

Trackerball units:

  On the system that's currently running in the museum, the trackerball
plugs into a small module (branded "interfax 1986") which swaps some of
the pins around before it then plugs into the user port on the BBC. The
"new" system we got doesn't have this. Sound familiar to anyonw? Are we
missing one from the "new" setup, or shouldn't it be present on the old
one?

  Mobule pin wiring as follows:

  module plug   module socket
  (to BBC port) (trackball plug connection)
   1             1
   2             2
   4             4 
   5             5
   6            12
  10            14
  16             6
  18             8
  20            10

The two trackerball units we have, old and new, are exactly the same
wiring.

LVROM media:

Does anyone have a list of what titles were produced on the LV media? We
have about 6 different titles but it'd be nice to know what's out there.


cheers

Jules