|Sony Vaio VGN-S260 Video BGA Repair Process Developed: May 2005
The following photos show whats involved with a Vaio VGN-6D2L / VGN-S260 video GPU BGA repair.
UUR or Unit Under Repair arrives for service. Only 1 UUR is processed at any given time, this is to eliminate any possibility of customer property being mistakenly misplaced.
UUR is disassembled to remove the systemboard.
The defect prone areas are inspected using a few different methods. One of which is show above, using a microscope video camera system, the "lifting" BGA solder spheres are evident.
The second method we use for defect verification is ICE or (In-circuit Emulation)
where the ICE system runs various register comparison tests through the boards processor interface POD.
Above / below the ICE software fails the suspect ATI video GPU by testing the device registers and comparing them to a known good board that is stored in the software. .