Hi John,

some questions:
- have you tried to handsolder and did you get good wetting ?
- did you profile for this particular area ?
- what kind of surface do you have?
- have you checked for contamination?
- are you sure what you see is non-wetting or could it be dewetting ?
- how about the wetting in other areas than in the center ?
- how old are the parts/boards ?
- were they stored properly ?
- tell us more about your profile, is your equipment capable of handling
those assemblies ?
- if you are sure you have done your best, have you thought of giving this
to a laboratory for further investigations?
- what is so special with the area, the parts ?

A lot of questions and there may be some more

Tell us more

---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------