Re: Tempest lines fading

its hard to tell but it look like its the Z-axis its not blanking or
when a colour comes on it makes not black out eg the big line! at the tempest.
look at the "analog vector-generator colour outputs" on the tempest2B.tif
i hope this is a help
it looks to me that the chip h9 is the bright ness and p9 is the color
try connceting the red gun to pin 11 not 10 and see if the red it right??

---- Original message from: MyPearl ----
> Have you checked the output waveforms on an scope (Both XY and normal mode)?
> I think you should be able to tell what's going wrong then.
> The pics can't tell me exactly what your problem is, actually...
>
> ----- Original Message -----
> From: "Joe" <jb@joesarcade.com>
> To: <vectorlist@vectorlist.org>
> Sent: Friday, August 29, 2003 11:46 PM
> Subject: RE: VECTOR: Tempest lines fading
>
>
> > Anyone have any thoughts on this? Or are the pics not good enough?
> >
> > Thanks,
> > Joe
> >
> > -----Original Message-----
> > From: Joe
> > Sent: Tuesday, August 26, 2003 10:01 PM
> > To: vectorlist@vectorlist.org
> > Subject: RE: VECTOR: Tempest lines fading
> >
> > Here's 2 short movies I took of it.. It is not the monitor. I connected
> > this to my 25" amp to take the movie.
> >
> > www.joesarcade.com/temp1.mov
> > www.joesarcade.com/temp2.mov
> >
> > Any suggestions are welcomed.
> >
> > Thanks,
> > JB
> >
> > -----Original Message-----
> > From: Joe
> > Sent: Tuesday, August 26, 2003 8:32 PM
> > To: vectorlist@vectorlist.org
> > Subject: RE: VECTOR: Tempest lines fading
> >
> > Yes. This is not the monitor. SEVERAL other boards work just fine with
> > this monitor... This is just a problem with one or two boards.... I'll
> > try to get some pics...
> >
> > JB
> >
> > -----Original Message-----
> > From: Andy Welburn [mailto:andy@andys-arcade.com]
> > Sent: Tuesday, August 26, 2003 7:02 PM
> > To: vectorlist@vectorlist.org
> > Subject: Re: VECTOR: Tempest lines fading
> >
> > I'm maybe not up to speed on this one, have you tried the pcb with a
> > different monitor or vice versa ?
> >
> > I have come across temperamental blanking Z circuits in G05's and 6100's
> > before, usually its down to a transistor breaking down under load in the
> > Z
> > section on the monitor... very hard to spot as the transistors checked
> > good
> > out of circuit on my meter (fluke 12 that can spot leakage).
> >
> > I also had a similar problem with a battlezone pcb that would trip the Z
> > circuit on the G05 infrequently.. I didn't suspect the pcb until i got
> > another G05 which did the same thing and realised it was the pcb not the
> > monitor... the battlezone AVG section 'crops' the picture so that it
> > doesn't
> > display a super widescreen version, and instead makes it 4:3 for the
> > monitor
> > (yes thats a simplified rendition of what it actually does).. what was
> > happening in my case was the picture wasn't being cropped, so even
> > though
> > the game played perfectly, it was displaying the mountains way off the
> > side
> > of the tube, therefore giving the Z section on the monitor a headache as
> > it
> > wasn't sure if it should kill the beam or not. This probably doesn't
> > apply
> > to tempest as there are no conceivably huge landscapes involved....
> >
> > Maybe that doesn't help, but try shotgunning the Z on the monitor, a
> > handful
> > of 2n3906's and some MPSA56's i think should do the trick. It just
> > sounds
> > odd that it would be the same problem on 2 pcbs...
> >
> > Andy Welburn
> > www.andys-arcade.com
> >
> > ----- Original Message -----
> > From: "Joe" <jb@joesarcade.com>
> > To: <vectorlist@vectorlist.org>
> > Sent: Tuesday, August 26, 2003 4:02 PM
> > Subject: VECTOR: Tempest lines fading
> >
> >
> > > I have two Tempest boards here in which the vectors fade in and out.
> > On
> > > the one board, I notice it most on the horizontal vectors. They start
> > > off as a normal width, but will change to about half the width. When
> > > faded, zeros on the screen look more like ones. Do, a high score of
> > > 1010101 would look like ||||||||||, but with VERY faint lines
> > connecting
> > > the tops and bottoms.
> > >
> > > I've been concentrating on the DAC-08 area, but I feel I may be
> > chasing
> > > a red herring here... I know this is not related to the aux board. Any
> > > suggestions?
> > >
> > > Thanks,
> > > JB
> > >
> > >
> > ------------------------------------------------------------------------
> > --
> > -
> > > ** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE"
> > in
> > the
> > > ** message body to vectorlist-request@vectorlist.org. Please direct
> > other
> > > ** questions, comments, or problems to chris@westnet.com .
> > >
> >
> > ------------------------------------------------------------------------
> > ---
> > ** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in
> > the
> > ** message body to vectorlist-request@vectorlist.org. Please direct
> > other
> > ** questions, comments, or problems to chris@westnet.com .
> >
> > ------------------------------------------------------------------------
> > ---
> > ** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in
> > the
> > ** message body to vectorlist-request@vectorlist.org. Please direct
> > other
> > ** questions, comments, or problems to chris@westnet.com .
> >
> > ------------------------------------------------------------------------
> > ---
> > ** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in
> > the
> > ** message body to vectorlist-request@vectorlist.org. Please direct
> > other
> > ** questions, comments, or problems to chris@westnet.com .
> >
> > --------------------------------------------------------------------------
> -
> > ** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in
> the
> > ** message body to vectorlist-request@vectorlist.org. Please direct other
> > ** questions, comments, or problems to chris@westnet.com .
>
> ---------------------------------------------------------------------------
> ** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
> ** message body to vectorlist-request@vectorlist.org. Please direct other
> ** questions, comments, or problems to chris@westnet.com .
>
>

---------------------------------------------------------------------------
** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
** message body to vectorlist-request@vectorlist.org. Please direct other
** questions, comments, or problems to chris@westnet.com .
Received on Wed Sep 3 04:15:12 2003