RE: Speed Freak

i John,
thank you for your info.
I'll contact William... In the meantime I'll continue to compulsively
substitute all chips ;)

  _____

From: owner-vectorlist@vectorlist.org
[mailto:owner-vectorlist@vectorlist.org] On Behalf Of John Robertson
Sent: giovedì 12 dicembre 2013 19.11
To: vectorlist@vectorlist.org
Subject: Re: VECTOR: Speed Freak

On 12/12/2013 6:54 AM, Marco Vernillo wrote:

Hi all,
it's a long time I don't write, that's because I had some raster cabs to
repair...
A couple of days ago my Speed Freak decided to die.
The first symptom was no vectors at all. TV is fully working because I
tested id with my star hawk PCB
After I tested Star Hawk I plugged again SF but spot killer lighted on
permanently.
After some investigation with my scope I decided to replace RAMs and some
other components somewhere and now the LED flickers.
After that I changed a lot of components (all ICs with weak signal or I was
onvinced were faulty) but nothing changed.
Board is a revision "K"
is there a sort of "to do list" to understand where the problem is?
Are there some check points "suggested" or something similar?
 
thank you!!
 
regards,
Marco

­

Marco M. Vernillo
R&D Director
Prisma Engineering
Via Guido Rossa, 12 - Anzola dell'Emilia (Bologna)
Tel: +39.051.6502.511
Fax: +39.051.6502.512
Mob: +39.346.5027.658
m.vernillo@prismaeng.it

You pretty much have to service these boards with the Cinematronics
Exorciser board OR the replacement one manufactured a few years ago by
William Boucher:

http://www.biltronix.com/cinexor.html

I hope that is still available, last update was in 2009...but Bill is still
active here and can chime in (and update his site page).

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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