Won't Power Up, No power light.

I've got a DS Lite I'm trying to get working. When it's plugged in, the amber light comes on like it's charging, but it won't power up. I've torn it apart and played with it for a couple of hours, and have some interesting details, but I've reached pretty much the end of what I can find info about....

It doesn't seem to be either of the fuses, both test ok

It seems to be something in the area of the contact pads INS+, INS-, VDET, and PVOD. I sort of accidentally found that if I had my thumb on those, it would work, and it would stop working shortly after I removed my thumb. I've tried every combination of jumpering one contact to another with 0 success. At this point I am thinking maybe my thumb is pushing down into one of the holes in the board, and that's getting it.

There are quite a few combinations possible if I include both the pads and the holes that my thumb would cover, so I'm hoping someone can maybe point me in a useful direction.

Any ides?