Re: Asteroids Deluxe with WG19V2000 problems

I seem to be getting the Z-out signal pulsing... what is the best way to
check? I used a volt-meter and it seems to be pulsing. (It is hanging
around 1.6 V but moving.) Could something on the deflector board be hosing?
High voltage? Thanks.
----- Original Message -----
From: Joel Rosenzweig <Joel_Rosenzweig@Agilent.com>
To: <vectorlist@lists.cc.utexas.edu>
Sent: Wednesday, December 08, 1999 3:12 PM
Subject: Re: Asteroids Deluxe with WG19V2000 problems

> You might verify that the Z-out signal from the game board is actually
> changing state. The monitor might be completely fine, but if the game is
> not triggering the blanking circuit, you'll get video as you describe. I
> don't remember if the Z-out is positive or negative logic, but either way,
> if it's stuck in one state, that's no good.
>
> Joel-
>
>
> -----Original Message-----
> From: Josh Wirth <jwirth@gru.net>
> To: vectorlist@lists.cc.utexas.edu <vectorlist@lists.cc.utexas.edu>
> Date: Wednesday, December 08, 1999 3:01 PM
> Subject: Asteroids Deluxe with WG19V2000 problems
>
>
> >Hey all... long time since I have been here (although I never said much
> >before anyway...)
> >
> >I have an AD with WG monitor and I cannot get the white-dot to disappear
> >unless the vectors are nearly invisible themselves. I have it at a point
> >where the intersection of vectors is clearly visible but the vectors
pretty
> >dim. I have the HV adjusted so the proper voltages are on Q900. The
> >deflection board seems to work just fine. There is very little burn-in
on
> >the monitor (so I am guessing the tube is probably OK.) Any clues as to
> >what I might need to do to get this thing up? Should I change the high
> >voltage rectifier coming out of the flyback? If so, the schematics list
it
> >as a H1809... something I haven't been able to cross-reference. Could
> there
> >be a problem with the vector generator on the main board? Any help would
> be
> >greatly appreciated.
> >
> >Thanks,
> > Josh
> >
> >
>
Received on Wed Dec 8 20:01:00 1999