Re: gEDA-user: Plane is shorting a net?

[chgans <chgans@tuxfamily.org>]

Le dim 18/04/2004 à 15:00, Karel Kulhavý a écrit :
> On Sun, Apr 18, 2004 at 04:56:29PM +0200, chgans wrote:
> > Hi all,
> > 
> > I'm encourting problems with shorted nets.
> > I make a design, i've done the routing and finally place a ground plane
> > on solder side and component size, but it gives me some problems:
> > PCB says:
> > 29: WARNING!! net "GND" is shorted to net "D/P"
> > 30: WARNING!! net "D/P" is shorted to net "GND"
> > 
> > net D/P is a connection between a SMD connector and a SMD resistor.
> > net GND is connected to the plane with thermals for some components
> > pins.
> > 
> > Physically, i can't see any connection between GND and D/P, it seems to
> > me that there isn't clearance problems...
> > 
> > By looking in the pcb text file:
> > - i can retreive my net D/P wich connect a connector pad to a resistor
> > PAD (and only this connection)
> > - i can retreive the GND net that connects some pins and pads but not
> > the ones involved by the D/P net.
> > 
> > So my problem is that PCB says that there are 2 nets that are shorted,
> > but i can't find them physicaly and/or visualy. nor by looking in the
> > pcb file, nor by viewing it with PCB.
> > 
> > Have anybody idea on how i can debug and solve my problem?
> 
> This is hard. The highlighting algoritm makes on me an impression it's
> in such cases useless. It always highlights the whole plane and you don't
> see anything. You have to try deleting various pieces of circuit until
> you strike the one with the short.

Finally, i delete all the elements involved, tracks, components, plane,
etc... re-synchronize with sch, re-place, re-route, re-plane, etc...
And the problem goes away! Don't know exactly why... :(

Thanks,
Christian
> 
> Maybe I am not right and harry eaton or dj delorie or whoever will uproot
> my impressions :)
> 
> Cl<
> > 
> > Thanks,
> > Christian
> > 
> > 
> > 
> > -- 
> > chgans AT tuxfamily DOT org
> > http://home.gna.org/wisirc/
> > 
-- 
chgans AT tuxfamily DOT org
http://home.gna.org/wisirc/