Re: Re: odd vectors on SD

Yes, but it's a tone. I think if the ram is good you will hear six high
tones. If there is a bad ram, then you will hear one of the tones low. That
is the bad ram. So if the 3rd tone is low then it's the third ram. Also you
will see in the switch test the letter R at the top. Check the manual for
details.

http://arcarc.xmission.com/PDF_Arcade_Atari_Kee/Space_Duel/Space_Duel_SP-181_1st_Printing.pdf

Brent
----- Original Message -----
From: "andre" <livnfree_can@yahoo.com>
To: <vectorlist@vectorlist.org>
Sent: Sunday, August 12, 2007 12:48 PM
Subject: Re: VECTOR: Re: VECTOR: odd vectors on SD

> Would the ram show up under self test?
>
>
>
> --- peter jones <highwayman2000@mail.ru> wrote:
>
>>
>> -----Original Message-----
>> From: andre <livnfree_can@yahoo.com>
>> To: vectorlist@vectorlist.org
>> Date: Sun, 12 Aug 2007 10:25:23 -0700 (PDT)
>> Subject: VECTOR: odd vectors on SD
>>
>> >
>> > Third SD pcb I have brought back to life, and the
>> > third one that has these odd vector lines all over
>> the
>> > place. Anyone have an idea what part this points
>> to as
>> > bad? I have most of the parts for the output
>> section
>> > but just want to avoid replacing a bunch of
>> working
>> > stuff blindly. I believe on this board both
>> am6012's
>> > are new. Could the TL082's cause this? Or the
>> 1495's?
>> > I don't know enough about what exactly these parts
>> do
>> > and what their failure would look like.
>> > Thanks.
>> >
>> LOL - tempest hybrid :)
>>
>> if those points are bogus then check the vector ram.
>> but it looks like the z-circuits are stuffed.
>>
>>
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>
>
>
>
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Received on Sun Aug 12 16:37:33 2007