Electronics Forum | Fri Nov 13 19:37:31 EST 2020 | jmelson
Yup, that's the first thing I looked at, the pogo-pin block on the front, and where the motor plugs in. Both could be stress points. I will try resoldering those anyway, although they looked fine. I examined the rest of the board, too, and could n
Electronics Forum | Tue Aug 28 13:46:46 EDT 2001 | mparker
To clarify on "Opportunities"- With 1000 components, the opportunities are far greater than 1000. You have 1 opportunity per component for a component defect i.e. bent lead, damaged part, tested bad, etc. You have a second opportunity per component
Electronics Forum | Mon Dec 11 17:09:27 EST 2000 | Michael Parker
Get a profiler for your oven. To say "we are not sure" and "we think it might..." shows you are running with a WAG (Wild Ass Guess). Not a good place to be if you intend to produce anything reliable, with quality. Run your profile and verify that yo
Electronics Forum | Thu Aug 10 13:36:48 EDT 2000 | Bob Willis
I recently have been examining multilayer board failures. They are the classic inner connection failure between the foil and the through hole plating which I have not seen in many years. Has any one experienced any issues recently specifically relati
Electronics Forum | Mon Mar 22 05:39:36 EST 1999 | Bob Willis
Has any one seen failures of chip resistors after 1-2 years where the junction between the silver termination and the restive element on the top of the ceramic has corroded through. This results in a high resistance failure after this period of time.
Electronics Forum | Fri Oct 09 08:50:43 EDT 1998 | Clifford Peaslee
| I posted a response to a question relating to vibration testing, listed a link to my URL, and noted that the posted response had a "?" at the end of the URL. I went back, examined what I typed, and found that there was no "?" on the completed form
Electronics Forum | Thu Jun 25 10:05:05 EDT 1998 | Chris Sargent
I have got a strange problem with a customers board. The problem being that I have had a number of boards returned to myself for Dry Joints. When you examine the joints, the solder fillet is perfect, the only problem being that it is attached to th
Electronics Forum | Sat Jan 05 10:21:29 EST 2002 | Todd Murphy
Has anyone ever had any solder related problems with the Motorola 860 BGA? We are currently using the 860 on several of our products and some of the solder joints for the 860 look like crumpled aluminum foil when viewed with the Ersa Scope. Does anyo
Electronics Forum | Mon Mar 24 04:00:34 EST 2003 | emeto
Hi mantis, this effect you are talking about is very interesting.I guess there is a difference in technology of both vendors.It;s obvious.But we should find the reason. One question and one simple sudgestion:What excatly is your oven? And have you pa
Electronics Forum | Tue Jul 08 18:53:21 EDT 2003 | MA/NY DDave
Hi The answer in general is no mixing of Lead Free with Sn/Pb solder. If you look at reliability data, failures after stress tests and then SEMs, failures occur at grain boundaries inside the joint. Lots more happens. By the way this mixing happe
