Hello all. I have a question concerning a diode on a 12vdc to 12/8/5vdc power supply for an RV Stereo/CD/DVD Player (Quest QX3202DVD). One of the diodes (red arrow) on the PCB has a 12 volt dc charge on both sides of the diode (anode and cathode) when tested from one of the legs to ground while it is in the circuit. Removing the diode from the circuit and testing it as a diode shows it is operating properly, with voltage only flowing one direction. All of the other diodes on the PCB do not have this same characteristic and show a normal 12vdc voltage on only one of the legs to ground. The other legs show a random mV. My question is this: Can anyone think of a reason the diode I have described initially would have 12 volts on both sides of the diode?
Thanks in advance for your reply.
Thanks in advance for your reply.