Re: Asteroids problem....double images (fainter and to the right horizontally)

Have you tried some nice fast 2114 rams in the vram positions? slow rams
often cause this behaviour, although i wouldn't expect the test mode to show
any anomolies....

also, a photo of the test mode would do wonders for further looking.?

Andrew Welburn
www.andys-arcade.com
----- Original Message -----
From: "John Robertson" <pinball@telus.net>
To: <vectorlist@vectorlist.org>
Sent: Thursday, March 04, 2010 5:25 PM
Subject: VECTOR: Asteroids problem....double images (fainter and to the
right horizontally)

> OK, I'm getting lazy, but I'm wondering if anyone has seen a board problem
> that causes double images horizontally?
>
> This is only shows in the text and rocks - but when you put up the test
> screen the crosshatch is normal, and the vector test works correctly as
> well (using Test and Diag switches).
>
> In the self test screen the dip switch 00000000 are echoed to the right
> about 4 off and fainter. The "11" (coin setting) above shows a single
> fainter "1" spaced to the right as well.
>
> In attract mode the screen has flicking text scattered around and the CPU
> resets frequently. In test mode the display is static and the CPU does not
> reset.
>
> Vector ROM and RAM substitutions do not change this result.
>
> I am about to pull out the Signature analyzing tools, but was wondering if
> anyone has seen this one before.
>
> Thanks!
>
> John :-#)#
>
> --
> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call
> (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
> www.flippers.com "Old pinballers never die, they just flip
> out"
>
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Received on Thu Mar 4 13:18:09 2010