i am testing a FET here is spec sheet http://forum.allaboutcircuits.com/attachment.php?attachmentid=17300&d=1268639919 now here is what one website says. using the diode function on your DMM. probe with - on the drain and + on the gate. this should arm the FET. then keep - on drain and put + on source. multimeter should beep. my FET passed this SO FAR. now it says to test the FET's ability to switch off touch all three pins with finger. then put - on drain and + on source again and should get a high reading. well my FET still beeps. is the FET defective????