Hello everyone,
I got a PCB from my friend's junk and just as an experiment I would like to see whether the diode in the PCB is working or not. I dont know what is the function of that PCB, just wanna know whether the diode is working or not. Is it possible to test that diode in the PCB or do I have to desolder it. I am having a digital multimeter to check the diode. Any suggestions would be really helpful.
Regards
LK
A lot depends on what other components on the board are connected to the diode.
My own methodology for in circuit testing of diodes is:
1 Test it
2 Does it test like a good diode?
3 Yes - diode is OK
4 No - disconnect one end of the diode, or remove if completely from the board, whichever is easier and test again.
The diode test on my meter like most these days does the job for me, if theres something across the diode it might mess up the reading so you'll have to lift one end of it to get a good test, bad diodes are often shorted.
A lot depends on what other components on the board are connected to the diode.
My own methodology for in circuit testing of diodes is:
1 Test it
2 Does it test like a good diode?
3 Yes - diode is OK
4 No - disconnect one end of the diode, or remove if completely from the board, whichever is easier and test again.