Re: gEDA-user: sparkfun 4 layer boards

["Mark Rages" <markrages@xxxxxxxxx>]

On Sat, Aug 23, 2008 at 12:04 PM, Eric Brombaugh <ebrombaugh1@xxxxxxx> wrote:
> Mark Rages wrote:
>>
>> I've had moderate success clearing blind shorts with the 5V bus of a
>> high-power computer power supply.  (This can be hazardous to other
>> parts on an assembled board)  Otherwise, use a current-limited power
>> supply to put a few amps into the stuck node.  Use a millivolt meter
>> to measure different places on it.  Lower voltage means closer to the
>> short.
>
> An IR camera to look for the hotspot would probably be a handy way to do
> this too. Who's got an IR camera though?
>

IR cameras are great for this.   I got a chance to see one in use last
year at a contract manufacturer.  The misplaced part was dissipating a
few milliwatts at most, but it showed bright red on the camera.

Regards,
Mark
markrages@gmail
-- 
Mark Rages, Engineer
Midwest Telecine LLC
markrages@xxxxxxxxxxxxxxxxxxx


_______________________________________________
geda-user mailing list
geda-user@xxxxxxxxxxxxxx
http://www.seul.org/cgi-bin/mailman/listinfo/geda-user