Again, check for correct wiring and good solder joints. If not, replace the capacitors or the bridges. Multiply this voltage by 2 to get the current thru the resistors. Make sure the transistor is isolated from ground. If the supply still doens't work, check the Emmiter and Base connections on the power transistor, the fuse and associated wiring.
Peltier supply works OK for a couple minutes, but then drops down or dies.
This is most likely a heat related problem. Make sure the fan is working and blowing on the power transistor. With the fan running, the transistor may get hot to the touch, but not too hot to touch. Without forced air cooling, the transistor may die, solder joints and wires can literaly be cooked. Pump supply doesn't work.