Steve, Ed
I have also participated in mass addition of wires to fix design issues,
without impact to reliability.  But the two cents I want to add is that
it's OK to do a jumper as a repair for a damaged trace IF you know why
the trace is damaged (e.g.. physical damage).  If you blindly add
jumpers to fix mystery opens in a board then you may be sending walking
wounded out to the field to die later.

As always: opinions are my own, mileage may vary; contents are hot, not
suitable for small children...

regards,

Graham Collins
Process Engineer
Litton Systems Canada
(902) 873-2000 extension 215


> -----Original Message-----
> From: SteveZeva [SMTP:[log in to unmask]]
> Sent: Wednesday, March 25, 1998 5:03 PM
> To:   [log in to unmask]
> Subject:      Re: [TN] circuit board trace repair
>
> Ed,
>
>      At a past employer, we built boards for a pretty large networking
> company
> that went into one of their servers. Because of mistake in one of the
> Gerber
> files for a assembly, we had to do a trace cut and install a jumper
> wire as
> part of the normal production process, which to me, would be the same
> as a
> trace repair.
>
>      From what I know, everything was fine with the boards...they ran
> just
> like they were supposed to and never had any problems. I know this is
> not
> scientific data, but just something that may show that if the repair
> is done
> correctly there shouldn't be a problem whatsoever...
>
>                                                             -Steve
> Gregory-
>
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