Hi I was planning on checking voltages on primary side of supply that is not currently producing any outputs on secondary side, with exception of 5vsb. I have read that one must keep about 20% load on a SMPS in order for it to function properly. My question is while I will have full load (main board) connected while testing will it be ok to unplug the inverted cables (my system has master/slave config)? I am assuming the main board would represent at least a 20% load. Any questions or comments on this is appreciated - Ted