Re: Asteroids Deluxe with WG19V2000 problems

Isn't there a 'black level' adjustment somewhere on those G-05's somewhere. It sounds like
this may fix it OR there is a problem on the biasing of the input levels somewhere along
the way.
  jess

Josh Wirth wrote:
>
> This has got to be fixable... doesn't it? Besides, if I turn the
> brightness up to see the expected vectors, I get retrace vectors as well.
> That's not going to fly :). Thanks, though.
> ----- Original Message -----
> From: Mark Jenison <jenison@cig.mot.com>
> To: <vectorlist@lists.cc.utexas.edu>
> Sent: Thursday, December 09, 1999 4:43 PM
> Subject: Re: Asteroids Deluxe with WG19V2000 problems
>
> > Hi,
> >
> > I've had two B&W vector monitors with the same problem over the years, and
> > asked about how to fix this very same problem. After finding nothing
> which
> > helped, I just chalked it up to "the monitor is getting old", and lived
> with
> > the dot in the middle of the screen. Fortunately for me, there was a hole
> > burned in the phospher at the center of the tube, so I positioned it such
> that
> > the dot landed right in that hole, and viola! No more dot! :-)
> >
> > Mark Jenison
> > Always looking for the simple man's answer
> >
> > On Dec 9, 12:16pm, Josh Wirth wrote:
> > > Subject: Re: Asteroids Deluxe with WG19V2000 problems
> > > If I turn down the brightness to the point where the white dot is gone,
> I
> > > see only the dot intersections. If I turn it up to the point where the
> > > expected lines are visible, I see the retrace lines, also. I am
> thinking
> > > that maybe the HV cage and the tube are fine (I swapped out another
> tube.)
> > > I am going to borrow an oscilloscope and check the signal coming off. I
> am
> > > assuming the the best place to check this is on the Z OUT tab. My
> schematic
> > > shows pin M on the edge connector as Z OUT but I have placed it on K(?).
> I
> > > shorted pins 9&10 on the 12 pin connector at one time and blew the two
> 3.3
> > > ohm resistors there (I am not looking at the board.) Could this have
> hosed
> > > something else down the line?
> >
Received on Thu Dec 9 16:28:07 1999