/diy/ - Do It Yourself

I'm troubleshooting a PS Vita Slim motherboard. Bought it on eBay, description said it wouldn't charge. I took it apart and the USB pins were floating, fixed that but it still has issues. I got it to charge once by unplugging and re-plugging a lot, usually it just sips 0.05a, and the USB data connection doesn't work either (device not recognized), but it can sense when it is connected, either to a power supply or to a computer. Everything else works so I'm pretty annoyed. I can't find any schematics or shit on this thing, I can't even find replacements except buying another Vita as a donor.

I'm guessing the chip near the inductor here is at fault (both data and power run through it), but is there anything else I can test?