I have a dead GTX 1070 that had two blown mosfets.

The first one was an AOE6930 which had no signs of physical damage but was shorting the 12V rail so I replaced it.
The second was a V3605 located on the end of the card and was clearly burnt.

I'm not very knowledgeable on the electronic workings of a graphics card, so I just looked for damage and shorts and fixed what I found. (Initially I just removed the two mosfets and then confirmed that the PC starts with the card installed as secondary and that the card is at least detected but otherwise non-functional)

When I powered the card after replacing the mosfets, without connecting the auxiliary power (ie. only plugged into the motherboard), the V3605 burned out again.

I need help to identify the cause of the V3605 burning out. (What is this mosfet's purpose on the board?)

I have circled the component that is burnt in the image below.

Please also assist me to identify the measuring points for Core, Memory, PEX, 1.8V, 3.3V and 5V with the approximate readings I should be expecting.