Hey Mike, if you drop the PH, (which I think stands for Phillips), a B4V3 comes back on a Google search as member of a 4.0 to 4.6v zener family. My guess is 4.3v, given the number and the way the 4 and 3 are seperated. Russ Gray, Gray's Electronics Inc. ----- Original Message ----- From: "Mike Schoettinger" <kc8lqu@xxxxxxxxxxx> To: <tvservice@xxxxxxxxxxxxx> Sent: Wednesday, December 08, 2004 8:39 PM Subject: [tvservice] 46" Magnavox PTV620 Chassis > Hi, I need a component part number. The board location is Z204 Its on > theaudio out PCB and its a zener diode. All it says on the diode is B4V3PH > and nothing comes up when I search for that part number. Any help would be > great. Thanks. Mike > >