PHR-803t doesnt work

Yes, always put the power switch between the battery and driver, never between the driver and diode. Always check for and discharge any output capacitor on your driver prior to connecting a laser diode. A charge in this cap can kill your diode.

^What he said . Discharging a capacitor is done by connecting both it's pins together, effectivly shorting them out. That way a capacitor will discharge itself. ONLY THEN you solder on your laser diode.