EEVblog #1341 - AMAZING $250,000 IBM Processor TEARDOWN!

Teardown of a $250,000 1991 vintage IBM 9121 TCM Processor module from a System/390 ES9000 Enterprise Server mainframe computer,. Amazing state of the art 63 layer ceramic hybrid module construction with 2772 pins! Part 2 X-RAY! And Dave demonstrates an amazing BGA desoldering technique that can only be done on these ceramic hybrid PCB’s. TCM PDF: Another teardown with an amaz