Getting In Too Deep

Reference Images DV1000 Sparks Sparks and No Power/No Lights

Earlier today I got my hands on an older Compaq M2000.  It was dead, no lights no anything. So checking the board (which is the same as the V2000 and the DV1000) . The front end MOSFET next to the power jack had bubbling on the surface (probably from overheating) And it was the wrong chip!? It was a SI4425 which has a lower current rating.  So I replaced it with the AO4413/FDS6679 series and tested again.  This time the charge light was on when the battery inserted. This told me that at least the unit was getting power. Then I remembered the common problem with caps on those models, so I started checking the caps. Sure enough I found the shorted cap on the bottom side near the rear of the DVD drive connector. OK replace that and turn on. Everything lights up, except the screen. No display on external. Hmmm - checking the GPU accidentally by touching it was !!HOT!! Used the crayon test, it made a small wax puddle on the chip. This GPU was definitely shorte...