Problems with inaccurate assembled UmTRXv2

Andrey Sviyazov andreysviyaz at
Sun Nov 11 22:18:01 UTC 2012

I think we should asking fab to use UV inspection system because of BGA
Seems first batch was assembled without any inspection because to small
On other hand, we have only two broken boards and I am not sure why.

Best regards,
Andrey Sviyazov.

2012/11/12 John Orlando <john at>

> <snip>
> >
> > A visual inspection, e.g. using a photos of boards, as I described,
> > might help as well.
> Does the assembly house for the UmTRx have access to an AOI (automated
> optical inspection) setup?  This is what you want, and is essentially
> what Alexander described previously: you work with the assembly house
> to get a "good" board built, then they train their AOI setup to
> inspect each board that follows to check for assembly issues that
> don't match what was done in the good build.  This process isn't
> perfect of course, but we've found that it cuts down on assembly
> issues considerably.
> This shouldn't add any significant cost to the build, and honestly, I
> don't know if I'd even consider using an assembly house that didn't
> have this capability.  It is a major time saver in the end.
> --
> John Orlando
> CEO/System Architect
> Epiq Solutions
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