Electronics Forum | Fri Dec 05 10:09:36 EST 2014 | robl
Hi Rob, Could be moisture getting into the boards or the BGAs or it could be drafts messing with the thermocouples measuring the heat at board level meaning you over cook it. Are you pre-baking the PCBAs & the BGAs before reworking and replacing?
Electronics Forum | Fri Dec 12 14:20:44 EST 2014 | emeto
there are several ways: 1. Manual method- Remove the part using hot air gun, clean the pads, make a small stencil to re-ball the BGA and it is ready for placement. 2. Improved method - Use equipment dedicated for BGA rework 3. No hassle method - Giv
Electronics Forum | Tue Jan 06 06:56:26 EST 2015 | stivais
How about rework (touch-up) for Class 3? Some say that you are not allowed to rework anything for Class 3. Though I have not found any proof for this 'requirement' in the standards.