Re: Re: Space Invaders Monitor Question

What about the tube itself? I wonder what would happen swapping his monitor into your cab (sorry if you did this, I didnt catch the entire thread) Maybe it's a gun issue...?

James H.

>
> From: "Matthew Rossiter" <rossiter@ni.net>
> Date: 2006/05/03 Wed PM 03:20:05 CDT
> To: <rasterlist@vectorlist.org>
> Subject: Re: RASTER: Space Invaders Monitor Question
>
> I checked everything including the video signals and set the brightness and
> contrast correctly. Still the whites are smearing a little too early when
> turning up the brightness. When this monitor was in the other cabinet the
> focus stayed nice and sharp all the way up to full brightness (but not
> oversaturated) and no smearing. I bypassed the composite wires and soldered
> in a gold plated RCA connector on the board and on the monitor, still same
> results. My board was tested in the other cabinet, so it's not the board
> either.
>
> Either I'm overlooking something, or it's a power issue. Is it possible
> that the 115v AC going in to the monitor could have something to do with it?
> I haven't checked on the oscilloscope to see if there's anything odd yet.
> The AC is coming directly from the wall right? And the isolation
> transformer is mounted into the monitor and jumpered to 120v. There's also
> a 100v setting.
>
> I have a midway Double Play that has a good sharp and bright screen - maybe
> I can compare the differences.
>
> Kinda strange...
>
> Matt
>
>
> ----- Original Message -----
> From: "Rodger Boots" <rlboots@cedar-rapids.net>
> To: <rasterlist@vectorlist.org>
> Sent: Wednesday, May 03, 2006 11:55 AM
> Subject: Re: RASTER: Space Invaders Monitor Question
>
>
> > peter jones wrote:
> >
> >> -----Original Message----- From: "Matthew Rossiter" <rossiter@ni.net>
> >> To: <rasterlist@vectorlist.org> Date: Wed, 3 May 2006 09:12:46 -0700
> >> Subject: Re: RASTER: Space Invaders Monitor Question
> >>
> >> > mirrored glass clean.... check Bad video ground.. I will
> >> > re-check.
> >> >
> >> > thanks.
> >> >
> >>
> >> not just the ground, check the video cable carefully. remember -
> >> composhit video is very sensitive unlike rgb.
> >>
> >> i dont know what you have there, but zacarria used a single-core
> >> screened cable for the video to block interference.
> >
> >
> >
> > Another thing I've run across is most people don't seem to be
> > able to properly set up a monitor. A lot of blurry pictures
> > are caused by setting contrast too high. That saturates the video
> > stages and the whites smear because of it.
> >
> > In the case of this old of a game, turn down the contrast, set the
> > brightness until the black areas start to glow, then turn down the
> > brightness until black is black and adjust contrast for the desired
> > white level.
> >
> > Doing it this way compensates for most
> > power supply/monitor/wiring/board combinations.
> >
> > If the brightness control is set too low the contrast ends up having
> > to be set too high and you start smearing.
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>
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Received on Wed May 3 16:44:14 2006