Re: Speed Freak

On 12/14/2013 4:15 PM, vernimark wrote:
> i John,
> thank you for your info.
> I'll contact William... In the meantime I'll continue to compulsively
> substitute all chips ;)
>

I advise against doing mass substitutions because of the risk of damage
to the logic board.

The most common failures for those games was listed (somewhere I have
the sheet) were a few of the PROMs and then a few ICs that failed more
than any others.

The Exorcisor is the best way to fix it though. I have an original one
in my shop.

John :-#)#
> ------------------------------------------------------------------------
> *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 <mailto: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"

-- 
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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