RE: Konami Circus Charlie Red Lines

Oh, right...

well, it's broke then. Something - perhaps a data buffer, etc is just not
happy....lots of help, eh?

John :-#)#

At 12:57 PM 12/01/2004, Al Warner wrote:
>Yes, that was my second thought. I already replaced it, 2 2128 chips.
>They were soldered in, I put sockets in so it'll be easier to change
>again. Unfortunatly, this did not help. I think I mentioned it in my
>initial posting ("I have swapped out the video RAM so that's not it.").
>
>Thanks for the response though!
>
>-Al-
>
> > Unlikely to be ROM, more likely bad video RAM - this is not always
> > testable by the CPU...if it is Dynamic RAM and is soldered in, you can
> > use an old trick of wedging a GOOD RAM IC overtop of the suspect one.
> > This works in many cases - such as Space Invaders, Taito boards and
> > other games that use Dynamic RAM (4116 is just one example of a Dynamic
> > RAM)
> >
> > John :-#)#
> >
> > At 07:22 PM 11/01/2004, Al Warner wrote:
> >>Hi Everyone,
> >>
> >>Thanks for the tips. I had already replaced the power supply because
> >> the original didn't have an adjustable +5V. I have tested other boards
> >> (Hypersports / Pooyan / Gyruss) in the cabinet and they work fine from
> >> a graphic perspective.
> >>
> >>Gonna mess with the ROMs this week to see if it helps. Also, I don't
> >> think it's power because if you look at pic 89 you can see that the red
> >> lines go around the Logo. Looks like it's confined to a particular
> >> plane.
> >>
> >>Any other hints would be appreciated.
> >>
> >>Thanks,
> >>
> >>-Al-
> >>
> >>
> >> > I was going to say a low +5 voltage; I have seen low voltages
> >> cause a
> >> > variety of issues including graphic/screen "noise".
> >> >
> >> > Peace!
> >> >
> >> > [Get Delete FXP Files 1.0 Now! http://www.deletefxpfiles.com/] -=-
> >> James R. Twine, MCP, (jtwine@jrtwine.com)
> >> > -----BEGIN GEEK CODE BLOCK-----
> >> > Version: 3.12
> >> > GCS d- s+:+ a30 C++++$ UL+++>++++ P+ t+++ 5+ X+++ tv+
> >> > b++ DI++ G++ h e(++) r++ W++ N+++ w++(+++) M-- PS+
> >> > ------END GEEK CODE BLOCK------
> >> >
> >> >> -----Original Message-----
> >> >> From: John Robertson [mailto:jrr@flippers.com]
> >> >> Sent: Sunday, January 11, 2004 6:57 PM
> >> >> To: rasterlist@vectorlist.org; rasterlist@vectorlist.org
> >> >> Subject: Re: RASTER: Konami Circus Charlie Red Lines
> >> >>
> >> >>
> >> >> If these lines drift around a bit I would be checking the
> >> >> power supplies.
> >> >> Looks to me like ripple on either the -5 or +12VDC supply.
> >> >> Might be on the
> >> >> regular +5 as well...so check them all!
> >> >>
> >> >> John :-#)#
> >> >>
> >> >> At 02:37 PM 11/01/2004, Al Warner wrote:
> >> >>
> >> >> >Hi Everyone,
> >> >> >
> >> >> >I have Circus Charlie board that works fine except that it
> >> >> had these bad
> >> >> >lines going through the main screen. I did some checks on Google
> >> and
> >> >> someone asked a similar question about another Konami game,
> >> >> but got no
> >> >> >answer. I have swapped out the video RAM so that's not it.
> >> >> I'm going to
> >> >> >mess with the ROMs now (already cleaned), but any advise would be
> >> >> appreciated. Screen shots at http://www.alsarcade.com/cc/pics
> >> >> >
> >> >> >Thanks,
> >> >> >
> >> >> >-Al-
> >> >> >
> >> >> >-=-=-=-=-=-=-=-=-=-=-=-=-
> >> >> >Visit Al's Arcade
> >> >> >http://www.alsarcade.com
> >> >> >-=-=-=-=-=-=-=-=-=-=-=-=-
> >> >> >
> >> >> >
> >> >> >
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> >> >
> >> >
> >> >
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> >>
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> >>http://www.alsarcade.com
> >>-=-=-=-=-=-=-=-=-=-=-=-=-
> >>
> >>
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>
>-=-=-=-=-=-=-=-=-=-=-=-=-
>Visit Al's Arcade
>http://www.alsarcade.com
>-=-=-=-=-=-=-=-=-=-=-=-=-

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Received on Mon Jan 12 16:22:14 2004