DNA1001D and DNA1002D control chips..XBOX saga continues.
 

XBOX saga still.

Found that the ATX VSB is not supplying the required 3v. Assuming the
primary is working (replaced fet and transistor), the optocouplers
should send a signal to say, sweet, power ok.

The signal goes to one of these chips. Very commonly found in delta
electronics psu's. They are obviously some sort of comparator which has
been rebadged. 16 pin IC. Anyone know what the normal numbers are for these.

Thanks

TEX