Re: Tempest mathbox? (no actually) problems

Well, if anyone is interested, further investigation reveals a few
more interesting oddities. It is NOT the math board, however another
result of this missing information is the self test does NOT display
the changing text when you spin the rotate knob: "Press Fire and
Super Zapper to..." although that section of the test does appear to
work, if i spin the control at random and press the Fire and Super
Z.. together then it will go into such things as erase, or colour
test, etc.

So, now that I know it is in the main board I put the Fluke 9010A
onto it, after substituting all the Eproms with a second board.
Vector and CPU RAM appear to be good in the short test. Hmmm. Time to
go home though (5:30PM and we have guests).

Oh, and another oddity - when you get the attract mode growing
TEMPEST name, it prints four (each one larger than the next), then
misses what appears to be one "TEMPEST", then continues growing for
another four, misses one, till the screen finishes with the largest
one - missing the fourth smaller one than the largest (or is it the
fifth, it does happen rather quickly).

Very curious. Perhaps I shall take a picture of the screen at that
point for the service records.

John :-#)#

At 3:14 PM -0800 3/30/06, John Robertson wrote:
>OK, here is an interesting problem. I just pulled one of our
>twenty-four year in storage Tempests out, powered it up, found out
>it NEEDED a LV2000 kit (great kit! -
>http://www.geocities.com/jeffhendrix67/lv2000/), now it powers up
>and plays.
>
>Sort of.
>
>What I get is an almost normal attract game screen (same as what
>follows), when I start the game everything looks great. The spikes
>come up with the sparkler, they shoot fireballs at me, and the blue
>thingys are flying up as well. The problem is the blue thingys
>VANISH about an inch before they meet the top edge of the pattern.
>They are still there, of course, as my character dies when they
>meet...
>
>So, I figure this is a job for Mr. Signature Analyzer, but was
>hoping that someone might have seen this before and can say "Change
>X IC".
>
>I'm just lazy!
>
>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"

-- 
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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