Checked the netlist.  It's clean - only one GND net.  Just for the hey of
it, I did a "Clear all nets", then re-updated the pcb from the schematics.
The polygons show up as NoNet, so I changed them to GND, and let them
rebuild.  Then dropped a via in an empty space connecting top and bottom
polys.  Rebuilt them ...

Still bloody isolated.  AND it still shows a ratsnest line to the nearest
GND pad ...

grrrr.

-- 
Dean Carpenter
deano at areyes com
94TT :)
----- Original Message ----- 
From: "Jon Elson" <[EMAIL PROTECTED]>
To: "Protel EDA Discussion List" <[email protected]>
Sent: Wednesday, March 09, 2005 3:09 PM
Subject: Re: [PEDA] Weird - via won't join GND polygons


>
>
> Nukien wrote:
>
> >Weird.  Not working here.
> >
> >I have polygons on top and bottom layers, both on GND net.  I drop a via
on
> >a blank spot, and it picks up the GND net just fine.  I can verify that
in
> >the properties for the via.
> >
> >I then redo the polygons, they rebuild, but the via is isolated.  But it
> >still has the GND net associated with it, and there's a rats-nest line
> >leading to the nearest pad on the GND net.  If I select the via, the
whole
> >GND net is highlighted as you would expect.  Even weirder, DRC doesn't
flag
> >a Broken Net error ...
> >
> >
> One possibility is the netlist is corrupted, and has TWO different nets
> both named
> "GND".  Scan the netlist to see if you have this.  When the netlist gets
> garbled, I
> usually delete the netlist, create a netlist from schematic and then
> load the netlist.
> When this gets messed up, the update PCB from netlist usually will just
> keep
> scrambling things.
>
> Jon
>
>
>
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