Yes, I've seen this picture before. It wasn't where to place the prods. I didn't know how to set up my cheapie multimeter. Last time I tried, I got a big purple flash from the LED and 2Pac went into zombie mode.
I have attached an enormous heatsink to my 2pac, which lets me run at very high voltage without the chip getting too hot, but right now I'm experimenting with just how low a voltage I can run and still achieve stable operation.
Got pictures? I'd love to see. You were able to find replacement heatsinks that could screw in easily with the existing screws?
