Re: Need Help with Asteroids Deluxe

It looks like the errors are not dependent on screen position as the 'N'
is good in both the BONUS and INC. If is was a DAC or output problem it
shoudl effect the self test as well. It is hard to tell from the pics
but are the errors consistent no matter where a same image is drawn on
the screen? Also, take for example the I in INC. It is being drawn as a
backwards C is looks like. Is this consistent anywhere there is supposed
to be an I? If so, I would look at the vector ROMs and maybe the data
buffers from them into the counters etc. Do you by chance have a bad
VROM error in the self test? If the game has been sitting that long,
maybe try cleaning all socketed IC legs in the vector section as well.
You may just have a bad connection on a pin somewhere.

SVerlander@aol.com wrote:

> Hi everyone, I need some help with an Asteroids Deluxe I am working
> on. Heres the story.
> My friend bought this Asteroids Deluxe back in 1983 from a local
> amusement company for $364.00. He still has the invoice. I used my
> truck and picked the game up and helped him take it in his house and
> that was the last time I saw it until a few months ago. The monitor
> had died long ago and it had been storied in a shed. I told him I
> would try and fix it as I have had some good luck repairing G05
> monitors. Well, a cap kit and new deflection transistors and the
> monitor was up and running and looking great but I now have a problem
> with the main board. I put the game in test mode and everything looks
> good, no problems but in game mode it has a few problems. The game
> plays fine but if you look at the pictures below (on my web page) you
> can see the text is corrupt for the BONUS AT and C R 1980 ATARI INC.
> Also as you rotate the ship the right and left points shift small to
> large and the small asteroids look like snakes that spin around but
> really they seem to be missing 2/3rds of their shape. If anyone has
> had this problem before and could point me to a part of the board to
> start looking for the problem please let me know. I have a logic probe
> but I do better at fixing power supplies and monitors. I have already
> reseated all the socketed chips and the board is clean.
> Here's a link to a web page with pictures showing the problem.
> Asteroids Deluxe
> <http://members.aol.com/severlander/Asteroids_Deluxe.html>
> http://members.aol.com/severlander/Asteroids_Deluxe.html
> Thanks for any help
> Sam
> In Virginia

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Received on Sat Jan 31 17:12:59 2004