Do you have any pictures? I would make diagnosis/recommendations more accurate. Dave Hillman Rockwell Collins [log in to unmask] On Mon, Jun 16, 2014 at 11:22 AM, Vladimir Igoshev < [log in to unmask]> wrote: > Hi Paul, > > It can be contamination if the balls or another reasons. We can figure it > out, so please let me know if you decide to do root cause analysis. > > Regards, > > Vladimir Igoshev > SENTEC Testing Laboratory Inc. > 11 Canadian Road, Unit 7 > Scarborough, ON M1R 5G1 > Phone: 647-495-8727 > Cell: 416-899-1882 > [log in to unmask] > www.sentec.ca > Original Message > From: Paul Taylor > Sent: Monday, June 16, 2014 12:03 PM > To: [log in to unmask] > Reply To: TechNet E-Mail Forum > Subject: [TN] Soldering Issues on Freescale PGA357 > > Hi > > new to the forum, although in a previous life I used it quite a lot! > > We use the Freescale MPC860DTCZQ50D4 in one of our designs, we've had a > few issues with soldering at our sub-contractor which has got worse as we > just don't seem to be able to lock down the root cause. > We have other BGA's on the boards (different pitches) which solder ok > > The problem is always the outer pins in the corners , I've a lot of infor > on the tests we have done, but I had seem a post about contamination of the > balls on the Motorola package, which to be frank I hadn't considered > > I've also seen some info about substrate changes which I'm wondering if it > also was connected > > ______________________________________________________________________ > This email has been scanned by the Symantec Email Security.cloud service. > For more information please contact helpdesk at x2960 or [log in to unmask] > ______________________________________________________________________ > ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________