I'll try to be as brief as possible.
When I place the metal frame back onto the motherboard and screw that goes in the hole in the bottom-right of
this picture, the PS2 won't boot. Black screen. Same if I screw in the one directly up and to the left of that hole.
If I leave them semi-loose, no problems. It works all the way until I put the case together and lay it horizontaly. Then it won't boot again.
However, if I place something underneath where the A/V cable goes into the PS2 to raise the components inside a little, it will work.
I've gone back in and soldered everything as low as possble, taking care that the solder doesn't raise when pulling away with the iron. I've made sure that the wires aren't being crushed by where the screws go into the motherboard through the metal frame.
I'm not sure what to do short of keeping the PS2 vertical.
What else in the lower-right area is sensitive? Is there something on the other side that's sensitive?
By the way, the chip is a DMS3.