Re: Possibly the weirdest Tempest problem yet.

Matt J. McCullar wrote:
> Speaking as a fellow service tech, I'd have to go along with Alex's
> response. Sounds to me like someone was trying to isolate a shorted
> power bus. Look very carefully at that mathbox board for something
> that has been replaced in the past... such as a bypass cacitor or
> something else that could short the +5 volt bus and ground together.
>
> Avoid spikes!
>
> Matt J. McCullar
Someone needs a Short Squeak! Great little tool for finding bus
shorts... It works by using a changing tone to tell when you are closer
to the short, works in the milliohm range...

John :-#)#
>
>
> -----Original Message-----
> *From:* owner-vectorlist@vectorlist.org
> [mailto:owner-vectorlist@vectorlist.org]*On Behalf Of *Matt Rossiter
> *Sent:* Friday, December 07, 2007 12:09 PM
> *To:* vectorlist@vectorlist.org
> *Subject:* VECTOR: Possibly the weirdest Tempest problem yet.
>
> I just finished fixing a box of Tempest boards this week that I
> had sitting around for a long time. I came across one that had
> some miserable problems with the Mathbox. After careful
> inspection I noticed someone cut the +5v legs of most of the IC's
> on the board!! Someone actually went though the trouble of
> RUINING a tempest board. I'm happy to say I bridged all those cut
> legs with a clean solder bridge and repaired the main board and
> it's back in business.
>
> Has anyone else had to fix a deliberate sabotage? :)
>
> Matt
>

-- 
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"
---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com