If you have the SMSP removed from the scope perhaps you could make some high-res pictures and post them somewhere with a link here. What often helps is to identify the switcher chip used and then look for a datasheet or even better an application note with a circuit which closely matches the PSU at hand. The datasheet is likely to also help to give a detailed description of the chip and how the circuit works.
There are many checks you can do before actually applying mains voltage to the PSU with all the asociated dangers.