Re: Tech Star Wars Help

more than likely the jitter is a flaky pot for the x or y adjustment.

--- On Fri, 9/18/09, William Boucher <boucher@mnsi.net> wrote:

> From: William Boucher <boucher@mnsi.net>
> Subject: Re: VECTOR: Tech Star Wars Help
> To: vectorlist@vectorlist.org
> Received: Friday, September 18, 2009, 8:00 PM
>
>
>
>
>
>
>
>
>
>
>
> I don't have a SW
> schematic in front of me so I'm
> not sure if this will apply, but on Space Duel and several
> other Atari vector
> games, the video section has two 3-pin regulators (probably
> 7815 and 7915
> that can be replaced with 7812 and 7912). 
> When one or both of
> these regulators fail, the unregulated DC supply going into
> the DAC circuit
> manifests itself as severe jitter in the
> picture.
>  
> Also, is your monitor an
> Amplifone or a
> WG6100?  If it is WG6100, dunno what version your
> deflection board is,
> but if it has the so-called "input protection
> circuitry" (not to be confused
> with a LV2000), then one of the clamping diodes is probably
> pooched.  Just
> replace all of the 1N914 diodes and the two germanium
> diodes (they look the same
> as 1N914 except they also have a small yellow or red band
> on them maybe) in the
> protection circuit or just shotgun the entire board by
> replacing them all
> since they are so cheap.  Replace 1N914 with 1N4148
> generic parts. 
>
>  
> I have a detailed parts
> list with sources
> here:
> http://www.biltronix.com/arcade_electcomp_01.html#wg6100_rebuild_parts
>  
>  
> William Boucher
>
> ----- Original Message
> -----
> From:
> Frank Zapotoczny
>
> To: vectorlist@vectorlist.org
>
> Sent: Friday,
> September 18, 2009 8:40
> AM
> Subject: RE: VECTOR:
> Tech Star Wars
> Help
>
>
>
> Kind
> of both
> directions up and down and left and right.  I
> recapped the boards a long
> time ago and I was going to try that to start along with
> resoldering the
> connectors.  I will try to get a video today. But it
> did’t look like the
> vector lines were moving but that the whole picture was
> jumping.
>
>  
>
>
>
>
> From: owner-vectorlist@vectorlist.org
>
> [mailto:owner-vectorlist@vectorlist.org] On
> Behalf Of Andre Huijts
> Sent: Friday,
> September 18, 2009 1:36
> AM
> To:
> vectorlist@vectorlist.org
> Subject: Re: VECTOR:
> Tech Star Wars
> Help
>  
> A video would sure help. Could you
> describe how it
> jumps (left-right/up-down or other
> way)?
>
>  
>
>  
>
>  
>
>  
>
>
> Op 18 sep 2009, om 03:50 heeft
> Frank Zapotoczny het
> volgende geschreven:
>
>
>
>
>
>
> I have a Star
> Wars upright with a
> Amplifone monitor. It has a wintron HV installed and had
> worked great for many
> years. It has been sitting for a about a year without
> being
> played.
>
>
>  
>
>  I turned
> it on to play a few
> games and the picture came up and looked great but after
> a few seconds the
> picture began jumping around and getting shaky. After
> about 5-10 minutes it
> stopped moving around and looked great again. Then after
> a few more minutes it
> started jumping around again.
>
>
>  
>
>  Can you
> guys give me a
> suggestion on where to start
> looking.
>
>
>  
>
> Thanks in
> advance for any
> help/
>
>
>  
>
> Frank
>
>  
>
>
>
>
> André
>
> Huijts
>
> andre.huijts@upcmail.nl
>
>
>
>  
>
>
>
>
>
>
>
>   =
>
> __________________________________________________________________ Be smarter than spam. See how smart SpamGuard is at giving junk email the boot with the All-new Yahoo! Mail. Click on Options in Mail and switch to New Mail today or register for free at http://mail.yahoo.ca
---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com
Received on Fri Sep 18 20:28:04 2009