Alrighty, well yours is the new version without a 0.9V LDO. The two resistors right above it (331 and 471) are a voltage divider that gets your 0.9V line. I don't know why you'd see 0.48V on 0.9V (after testing some 400 current-version sticks I've never seen that error) but it could be a problem there. If those resistors are seated correctly and doing their job, it must be something broken inside the ASIC.
Thanks for looking into it and responding quickly. I checked the 0.9V connection on the other 3 sticks and they show between 0.90-0.93 V, so this one does seem to be the odd stick out. I'll PM you for further steps to take for repair/replacement.