Re: Tech Star Wars Help

He said it goes left-right and up-down plus the whole picture seems to
shake so that doesn't sound like pots to me (or both have to be bad).

If so, I made a video about how that looks here:

http://www.youtube.com/watch?v=yF5hvj2_OBA

Op 19 sep 2009, om 02:28 heeft andre het volgende geschreven:

> 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
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> =
>>
>>
>
>
>
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André Huijts
andre.huijts@upcmail.nl

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Received on Sat Sep 19 01:36:27 2009