I have a string of LEDs in series, in parallel with 3 other equal strings, and it fails (goes dark) after a couple of minutes (the other strings are fine)!
I watched the current with a meter in series, and it looked normal until just going to zero as the string went out.
I tried 1/2 the current with an additional resistor (from 20 to 10ma), and, interestingly the LEDs still looked about the same...until, again they went out!
Anybody have any idea what might cause such behavior? I'm thinking perhaps I have one defective LED in the string, that maybe gradually warms up and fails?
Thank you!
I watched the current with a meter in series, and it looked normal until just going to zero as the string went out.
I tried 1/2 the current with an additional resistor (from 20 to 10ma), and, interestingly the LEDs still looked about the same...until, again they went out!
Anybody have any idea what might cause such behavior? I'm thinking perhaps I have one defective LED in the string, that maybe gradually warms up and fails?
Thank you!