Frank,
You may also look at some of the rework tools such offered by
circuitmedic.com. They have some clean looking solutions to jumper wires
etc. I use them a lot for PCB repair and I have noticed some of their
rework offerings. I have not used them for anything but PCB repair.
Leif Erik Laerum
On 7/29/2011 5:53 PM, Steve Gregory wrote:
> Hi Frank,
>
> I have your doc posted here:
>
> http://stevezeva.homestead.com/Rework_Instructions.doc
>
> Looks like you're dealing in some tight quarters there, it really
> makes things tough. Doesn't help that there are all of them unmasked
> vias around either. Is the IC a QFN? I don't see any leads coming off
> it. Don't know what the application is, so I can't comment on the
> suitability of this solution. Generally from my experience, the
> customer is the customer, and whatever solution is decided on, both
> the vendor and the customer need to buy into it. and that's where
> having a real partnership with each other makes a huge difference when
> trying to work through situations like this.
>
> Nobody likes to have to resort to such measures as this, but shi...I
> mean stuff, happens.
>
> We've done some crazy things here. One of the latest ones was this:
>
> http://stevezeva.homestead.com/Crazy_Mod_Inst.jpg
>
> These were the instructions from our customer, and in all fairness
> they asked first if we could do this. All we could do is tell them
> that we would try. Take note that these are 0402's. It looked kinda'
> feasible on paper. But what we didn't take into account was that the
> 120nH inductor was a Coilcraft part with bottom only terminations.
> Below is what we wound-up doing:
>
> http://stevezeva.homestead.com/Crazy_Mod_Done.jpg
>
> This is where having good, and I mean good, rework technicians is
> absolutely priceless. I am constantly amazed at what our technicians
> can accomplish. A similar mod had to be done at another location on
> the board, and thank goodness we didn't have to do this on too many
> boards. As far as I know this worked, and our customer was grateful.
>
> Steve
>
>
>
> -----Original Message----- From: Frank Kimmey
> Sent: Friday, July 29, 2011 4:36 PM
> To: [log in to unmask]
> Subject: [TN] Rework from cut and jump
>
> I have asked Steve G to post a rework file for me.
> Our customer seems to dislike the white wire approach.
> Can anyone offer a more elegant solution?
> Please feel free to contact me offline if you are looking for the
> business.
> Any suggestions will be appreciated
> Thanks,
> FNK
>
> Frank N Kimmey CID+
> Manager - PCB Design
> Powerwave Technologies Inc
> Mobile - 916-670-0645
>
>
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