Due to a stupid accident by me, I acquired a 980m with a chunk knocked out of the core. Not wanted to scrap a perfectly good top end PCB for parts, I wanted to replace the core. You can see the gouge in the core to the left of the TFC918.01W writing near the left edge of the die.   First I had to get the dead core off:     With no sellers on ebay selling GM204 cores, my only option was to buy a full card off ebay. With no mobile cards under $500,I had to get a desk