Hi.

OK, this could be bad. It sounds like your power supply may be ok, but there is a short on both the main 3v and 5v (not 6v, the silk screen can be a little unclear) rails on the board, on the other side of the jumpers. Do you have a multimeter? If so, measure the voltage between each of the inner pins of the 3v and 5v headers with the jumpers removed and the power on, and ground (middle screw in the PCB is as good as anywhere). By inner pins I mean the pin each pair nearest the power supply chip (max1631). The voltage should be 3 and 5 volts respectively, to a couple of percent. Then, turn the power off, wait a minute or so, and measure the resistance between the other pin of each pair and ground. This should be quite high, on the order of several hundred to several thousand ohms.

If you find, as I suspect, that you have the correct voltage on the psu, but nearly zero ohms to ground on both power rails, you have a short linking both internal power planes to the ground plane. Normally this is caused by a foreign object somewhere, perhaps under the pcb.

pca