[sdiy] Today's Pet Peeve: PCBs

[MTG]

I may have to look at AllPCB or someplace that offers electrical 
testing. Do they need anything from me for that?  Like vectors or 
anything?  One would think the board is self-explanatory and it passed 
DRC and ERC. As mentioned, these boards are not at any limits or exotic. 
It's a clear failure of the process.  If I get a chance this weekend I 
will take some photos.  I did post the OSHPark failure online somewhere 
but no idea where that was.

I want to mention that with both fabs I had very many boards that were 
fine from these and other runs. It's just the odd PCB that happens maybe 
once a year but I never think to look so I never notice until I stuff 
and test, then, crap.


On 7/27/2018 11:05 AM, Vladimir Pantelic wrote:
> in about three dozen orders from PCWAY and ALLPCB I never had a bad 
> board except one where the stop mask had a blemish...
>
> On Fri, Jul 27, 2018, 20:02 David G Dixon <dixon at mail.ubc.ca 
> <mailto:dixon at mail.ubc.ca>> wrote:
>
>     Hmm. Interestink.
>
>     I always thought that professionally made boards were always
>     "perfect" and I
>     only had to worry about my own janky-ass boards.  However, I always
>     thoroughly inspect my own boards for visual faults, test anything
>     that looks
>     remotely suspect, and tin any traces that look at all raggedy.
>
>     > -----Original Message-----
>     > From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org
>     <mailto:synth-diy-bounces at synth-diy.org>] On
>     > Behalf Of MTG
>     > Sent: Friday, July 27, 2018 10:49 AM
>     > To: synth-diy at synth-diy.org <mailto:synth-diy at synth-diy.org>
>     > Subject: [sdiy] Today's Pet Peeve: PCBs
>     >
>     > So my pet peeve is different. While soldering up some
>     > prototype boards received from DirtyPCBs (Wherelabs) I found
>     > one copy of board A that had two feedthroughs shorted and one
>     > copy of board B that had traces with gaps in them (missing
>     > copper).  Same thing happened before on boards from OshPark.
>     > I wish I'd noticed before I soldered the parts on!  I guess I
>     > need to super inspect each board. The gaps aren't really that
>     > hard to see, but the feedthroughs I needed to buzz out to find.
>     > Fortunately that one was fixable. The missing copper one is
>     > quite a few traces and not sure it's worth the time to rework it.
>     >
>     > So, any sage advice? Is PCB testing worth it? Or is the cost
>     > of a couple of bad boards less painful.
>     >
>     >
>     >
>     > _______________________________________________
>     > Synth-diy mailing list
>     > Synth-diy at synth-diy.org <mailto:Synth-diy at synth-diy.org>
>     > http://synth-diy.org/mailman/listinfo/synth-diy
>
>     _______________________________________________
>     Synth-diy mailing list
>     Synth-diy at synth-diy.org <mailto:Synth-diy at synth-diy.org>
>     http://synth-diy.org/mailman/listinfo/synth-diy
>
>
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at synth-diy.org
> http://synth-diy.org/mailman/listinfo/synth-diy

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20180727/62b275b0/attachment.htm>