RE: Tempest video problem

Excuse my ignorance and my newbieness, but what chips are the MC and LF
chips? I am having similar problems with my Major Havoc (ie. spot killer is
on and no picture, but game is playing because I can hear the sound.)
Anyway, since both are ataris and I have noticed a lot of smiliarities, I
thought I might check out the advice for the tempest problems and see if I
can also check out the video output stage. Also, I don't know what AVG
stands for (I am assuming it is "something vector generator", but I am not
sure and don't know what the first part is. Anyhow, I cannot see any chips
that say MC or LF, so I am at a bit of a loss. Any help would be
appreciated.

Thanks
Andy

-----Original Message-----
From: Ozdemir, Steven S, GOVMK [mailto:sozdemir@att.com]
Sent: September 7, 2000 13:50
To: vectorlist@synthcom.com
Subject: RE: VECTOR: Tempest video problem

G'day folks,

I remember fixing a problem just like this on a Tempest cocktail. It was
the MC chip (not the LF chip) in the Tempest PCB AVG...sorry for the vague
references. I don't have access to any documentation while I'm writing this
email.

Have you checked the monitor in another game? That'd be the clencher.

            Steve Ozdemir
            sozdemir@att.com

ps - You might want to check the leads going to the MC chip also.

-----Original Message-----
From: Bret Pehrson [mailto:bret@infowest.com]
Sent: Thursday, September 07, 2000 9:23 AM
To: vectorlist@synthcom.com
Subject: RE: VECTOR: Tempest video problem

> (I asked one of my EE professors about it and the best answer he could
> provide was that sometimes transistors will have strange and unpredictable
> behavior when they get old)

Hey, I've seen that same behavior in EE professors! Whoops -- I should have
posted this to VECTOR.SMARTASSREMARKS -- sorry.

> -----Original Message-----
> From: owner-vectorlist@synthcom.com
> [mailto:owner-vectorlist@synthcom.com]On Behalf Of jeff hendrix
> Sent: Thursday, September 7, 2000 9:34 AM
> To: 'vectorlist@synthcom.com'
> Subject: RE: VECTOR: Tempest video problem
>
>
> I had a similar problem on a star wars with a WG in it.
> It would draw half way up the top half of the screen, then wrap
> back around
> to the middle. (the top of the screen ended up back near the center)
> Replacing the deflection transistor fixed it.
> (I asked one of my EE professors about it and the best answer he could
> provide was that sometimes transistors will have strange and unpredictable
> behavior when they get old)
>
> -jeff
>
> -----Original Message-----
> From: Rich Gopstein [mailto:gopstein@pluto.njcc.com]
> Sent: Wednesday, September 06, 2000 7:32 PM
> To: vectorlist@synthcom.com
> Subject: VECTOR: Tempest video problem
>
>
> I have a friend with a Tempest which has a strange video problem. The
> monitor is a WG6101. The image is missing from the left side of the
> monitor (actually the upper half of the un-rotated monitor). The strange
> part is that instead of the normal deflection transistor problem, the
> missing left half is folded over on top of the right half. The vectors
> themselves look normal except for the folding problem... Any ideas?
> Thanks.
>
> Rich
>
>
> ------------------------------------------------------------------
> ---------
> ** To UNSUBSCRIBE from vectorlist, send a message with
> "UNSUBSCRIBE" in the
> ** message body to vectorlist-request@synthcom.com. Please direct other
> ** questions, comments, or problems to neil@synthcom.com.
> ------------------------------------------------------------------
> ---------
> ** To UNSUBSCRIBE from vectorlist, send a message with
> "UNSUBSCRIBE" in the
> ** message body to vectorlist-request@synthcom.com. Please direct other
> ** questions, comments, or problems to neil@synthcom.com.
>

---------------------------------------------------------------------------
** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
** message body to vectorlist-request@synthcom.com. Please direct other
** questions, comments, or problems to neil@synthcom.com.
---------------------------------------------------------------------------
** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
** message body to vectorlist-request@synthcom.com. Please direct other
** questions, comments, or problems to neil@synthcom.com.

---------------------------------------------------------------------------
** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
** message body to vectorlist-request@synthcom.com. Please direct other
** questions, comments, or problems to neil@synthcom.com.
Received on Wed Oct 4 00:15:12 2000