Subsequently there was a lot of PCB “shotgunning” going on. This was the practice of making an educated guess at what IC was causing the issue, and changing it. This meant a huge expense in ICs, most of which were thought to be fine; it would be a solder problem causing the fault (open or short under the BGA).
So they introduced an exercise of sending the removed ICs to Retronix for IC Recovery, and putting them then back into the repair loop. For IC Recovery were also sent 3rd time failed PCBs.
This resulted in a 61% drop in IC cost in the repair area, with no noticeable difference in test yields.
All the ICs were tested electrically by Retronix before being returned.
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Watch the video about IC Recovery here